Implementing Integrated Water Resources Management (IWRM) in Water Projects in Rural Areas, in Al-Mahweet Governorate (Case Study: Yelaan, Sawaan and Al-Dahabishah Villages) A Dissertation Submitted to the Water and Environment Center - Sana’a University in Partial Fulfillment of the Requirements for the Master Degree in Integrated Water Resources Management By Kaid H.S. Al-Sadrah BSc in Geology Under the supervision of Co-Supervisor Dr. Bilkis A. Zabara Professor of Physical Chemistry Main Supervisor Prof. Dr. Abdulla S. Babaqi Assistant Professor of Physical Chemistry Water and Environment Centre (WEC) Sana’a University 2013AD-1435H 1 1 Introduction and Literature Review 1.1 Global Water Problem Access to safe drinking water and appropriate sanitation are both essential for life. The lack of safe water on human health is one of the world’s major causes of preventable morbidity and mortality. The human health can be affected by many waterborne pathogens, which might enter into drinking water supply systems or water sources as thermo tolerant (faucal) coliforms. Their sources are mostly human and animal faeces. Water Problems in Yemen In rural areas of Yemen sources of drinking water are mainly surface water, ground water, spring and rainwater. Access to safe drinking water is very difficult and water networks are not yet available for most of rural areas. Furthermore, the often natural clean water resources obtained from springs and rainwater get frequently contaminated with many pathogen and cause water borne diseases. The need for safe and clean drinking water became last decades even more necessary, due to the rapidly growing population, groundwater depletion and increasing pollution (CARE, 2007). Water Treatment Technologies In the last decades, more high technical water treatment systems were developed by making use of chemical, flocculation and filtration techniques. It is worth mentioning that traditional 1 2 and modern treatment systems vary in price, user-friendliness, thus, making them suitable for different user groups. Some of these methods are discussed in more detail below: 1.3.1 Chemical Disinfection Methods In general, chlorine is the most effective and simplest chemical disinfectant for drinking water at an overall level. It is available almost in all countries. The chlorine disinfection method is capable of killing all forms of bacterial and viral water-borne pathogens. However, at high concentrations, it can create a minor risk to the human health as skin irritation and create unacceptable taste for drinking water.(WHO,2004) Another chemical widely used for disinfection of drinking water is iodine. Like chlorine, it is very effective for killing or inactivating waterborne pathogens. However, unlike chlorine, it is not suitable for daily treatment as it causes more serious health problems as dry skin, blood pressure, cancer and unpleasant taste for drinking water. Chlorine and Iodine are not suitable for daily treatment, but can be used for short term treatment only (Mattelt, 2006). 1.3.2 Physical Disinfection Methods Boiling water or Heating water Boiling water is a widespread technique, but it cost fuel (gas or wood) and time. A temperature of 55°C or above over a period of several hours will inactivate most bacteria. Solar pasteurization Solar pasteurization treatment: this could be achieved via putting water into clear plastic bottles, containers, and containers and exposed to UV in sunlight. The solar radiation in many regions can obtain temperatures of 55°C inside the container or plastic bottles for several hours. (Mattelt, 2006). Solar disinfection systems 3 Solar disinfection systems (SODIS) have been improved by adding steps to reduce water turbidity by using settlement or filtration and increasing effectiveness of UV inactivation by aeration (shaking water container)(Mattelt, 2006). Ultra violet lamp UV light is used for drinking water treatment of some water borne pathogens, due to the fact that some organisms protozoal cysts, such as Cryptosporidium or Giardia are sensitive to Ultra violet (UV) irradiation, but resistant to chlorination. 1.3.3 Sedimentation and Filtration Methods Sedimentation and filtration techniques can be used in drinking water production facilities or at household level. Sedimentation is mainly used as a pre-treatment or first stage treatment of water. Literature Review and Previous Studies Many studies were carried out in different countries for different water sources, which aimed at evaluating the effectiveness, performance and the treatment efficiency of many types of water filters such as Silver Filters and Candle Filters. In Europe, the drinking water directive of (1998) was developed to set strict standards and including many safety margins, in order to protect people’s health. Particular elements of concern are the concentrations provided for micro organisms such as Escherichia coli (E.coli), water appearance (color) and tastes, chemicals (nitrate and pesticides), and heavy metals, such as copper and lead. All these substances should be in regulation and acceptable range or value for every parameter. The parametric value applies to the sum of the concentration or maximum value of the individual compounds or parameters (Drinking Water Inspectorate, 2010). 4 Previous Studies in Yemen Considering the above, the inhabitants of Yemen reaped the benefits of the introduction of ceramic silver water filters. In 2008, Bashir Al Nasiri conducted a pilot study on the health and socio-economic impact of Silver Impregnated Ceramic Filters (Silver Filters) in 4 villages of Amran Governorate for about 12 months with the support of the SFD and the former GTZ. The population in the study area used to drink contaminated harvested rainwater stored in cisterns creating many health problems for its consumers. The study revealed that the Silver Filter showed a 99% removal of total and faecal coliforms in all households. The general health for households improved (reduced water borne diseases). This improvement increased from15% after one month to 68% after 12 months. Diarrhoeal diseases among children decreased from 63.9% before using filters to 14% after one month of using water filters. In adults, diarrhoea decreased even from25% to 0%. However, after three months of silver filters use, diarrhoea started to increase again. This increment could be attributed to reasons other than filtered drinking water or improper use for water filters. In addition, the socioeconomic conditions of village households improved as a result of reduced health treatment expenses from about 9300 YR to less than 5000 YR with some exceptions (AlNasiri.B, 2010). Integrated Water Resources Management IWRM is a holistic and dynamic process for the sustainable management, allocation, equity, and monitoring of the use of water resources with clear social, economic and environmental development objectives (ESCWA, 2007)& Nagi. M,(2010). IWRM is an old concept since more than 60 years, but it became popular in the 1990s. The current and the expected trends in many countries indicate that water problems of the future will continue to become increasingly more and more complex and intertwined with other development sectors like agriculture. The concept of IWRM has been promoted by many 5 international institutions. For instance, the United Nations Water Conference, which was held in Mar del Plata, Argentina, in March 1977, indicated more improvement in IWRM. The conference was an intergovernmental meeting and the action plan for IWRM was approved by all members of the United Nations at that time. However, the Dublin Conference which was held in 1992 (a meeting of experts) concluded with the“ Dublin Principles”. Its recommendations were never approved by any government, irrespective of the claims to the contrary of the individuals and institutions that were mostly responsible for the organization of this conference, but now it became popular. The definition for IWRM that is most often quoted at present was formulated by the Global Water Partnership in 2000, which is defined as a process, which promotes the coordinated development and management of water, land and related resources, in order to maximize the resultant economic and social livelihood in an equitable manner without compromising the sustainability of vital ecosystems. IWRM should be implementable to find better and more efficient solutions for water problems (Biswas, 2004). Interventions in Al-Mahweet Governorate Much attention has been focused on water projects regarding both quantity and quality of the potable and drinking water within the perspective of IWRM in Yemen. CARE and the former GTZ are international organizations working in Yemen in many sectors since long time; one of them is the water sector. 6 Map 1.1: Al-Mahweet Governorate, Yemen (CARE, 2007) CARE Yemen focuses on improving food security and safe water supply, including sanitation in rural areas. One of its project areas is Al-Mahweet Governorate (three villages called Yelaan, Sawaan and Al-Dahabishah). Those villages were chosen as they are the poorest villages in Al-Mahweet Governorate and its households suffer from water shortage and water quality deterioration. Furthermore, water fetching in these villages is a laborious task for the women and girls consuming at least two hours per day, preventing them from attending school or carrying out other activities. Yelaan and Sawaan villages depend on spring water (photo 1.1&1.2), whereas Al-Dahabishah depend on one private manual water well with a pump and sometimes rainwater runoff. Drinking water is mostly available throughout the year with a very limited amount. However, the quality of drinking water in those villages is low. Drinking water is contaminated, not only because of contaminated water sources (photo 1.3), but also due to bad handling and storage in contaminated containers. Before the 7 implementation of the water project in the study area, people did not know that drinking contaminated water is a source of diseases as diarrhoea, which effects households health. Water Projects Two water projects were implemented in the study area, one for Yelaan and Sawaan villages , the other one for Al-Dahabishah, that are summarized in table 1.2. Name of village Yelaan Sawaan Al-Dahabishah Location Mountain Mountain Wadi Water source Spring like shower Spring Rainwater runoff (spring) + manual water well Type of Filter Silver filter Silver filter Candle filter Water net system - cementing catchment area and sliding wall (water source)to collect water. - covering water source - deepening open water well to30 m (photo 1.3). - small gravel basin for water purification. - main water storage for collecting and distributing water (photo 1.4). - another water distribution storage at village level. - water storage for collecting and distributing water (photo 1.5) - iron pipes to transport the water from water source to storage. -drainage basin to collect disposal or waste water. - iron pipes to transport water from the source to the storage. -water storage for collecting and distributing water. - water pump. - iron pipes to transport the water from water well to water storage. -plastic pipes from storage to all households. - drainage basin to collect disposal or waste water. Literacy class Gender(Name of LWA) Income Generating Activity(IGA) One for both villages One Al Tafuq for both villages Al-Dahabishah A poultry production unit for both villages (CARE, June2008). 8 Honey bee farm Every water project consists of two components: A) Component 1 (water net system) B) Component 2 (IGA and literacy class) Drinking Water Treatment in the study Area Safe drinking water quality means that water used directly for human should not cause any health risk. The physical, chemical and microbiological parameters should be in the acceptable range prescribed by drinking water guidelines as the WHO guidelines. As mentioned in component 1, two types of Ceramic filters were introduced during time projects: the Ceramic Candle Filters and Colloidal Silver Impregnated Ceramic Filters for treating drinking water at household level to improve the quality of drinking water, as described here in below: 1. Colloidal Silver Impregnated Ceramic Water Filter (Silver Filter): Those filters are now produced, sold and used in over 11 countries around the world. In Feb 2007, GTZ (GIZ now) / SFD started a gas fired kiln in Sana’a as a pilot study, which was funded by the Social Fund for Development (SFD) and the IWRM component of the former GTZ in Yemen to produce a bucket shaped piece of pottery Silver Filters. The Silver Filters are produced almost from local material by a local potter factory (photo 1.9). Raw material (clay) for the ceramic bucket production is taken from different surrounding places, while the colloidal silver is the only imported filter component. As for plastic bucket, it is produced by a local manufactory. The Silver Filters have micro-scale pores impregnated with silver, which is effective for removing bacteria from water. 9 Photo 1.10: Colloidal Silver Impregnated Ceramic Filter (CARE, April,2008) The advantages of Silver Filters can be summarized in several points as follows: Tested and evaluated in 11 countries. Treats contaminated water or eliminate bacteria (coliform), which causes diarrhoea. Removes protozoa (due to small size pores). Removes suspended solids and turbidity. Has a residual silver level significantly below WHO guidelines standard. Reduces illness, so it improves household health and economy. Produces flow rate of 1.5 – 2.5 liters per hour. Are produced from local materials, except the colloidal silver, which has to be imported. Are manufactured of clay, which is culturally acceptable. Generates employment and utilize local skills. Produces water, less costly effective than bottled water. Are of affordable costs. Cost of the Silver Filter including both the plastic bucket and the ceramic clay (pottery) was 3000YR or 1000YR for the pottery only in 2008. Needs of a brief training for potters, assistants and users for handling. No need for electricity power. 10 Disadvantages of Silver Filters are: Needs regular maintenance (cleaning). Possible breakage or easy to break. Does not remove viruses, pesticides or chemicals. Ceramic filter bucket needs to be replaced after one to two years. Difficult to store (PFP, 2004) & (GTZ, 2007-2008). 2. Ceramic Candle filter (Candle filter): The Second type of Filters is the Ceramic Candle filter, which is used for treating drinking water in Al-Dahabishah. Such filters are used at the household level worldwide (Asia, Africa, South America, Central America and North America). In particular, filters are also used in regions, which are more affected by natural disasters. The Candle filter technology has been implemented in 22 countries (Mattelt, 2006) & (Murcott, 2006). The candle filter consists of three parts: Upper bucket with a lid (plastic).Its capacity is about 10-15 liters filled with untreated water. Ceramic candles affixed on the bottom of the upper bucket. It use to treat water and allow water to flow throw it to lower bucket. Lower bucket to collect clean water with a capacity of about 10-15 liters, a lid and a tap used as an outlet for clean or treated water. The above plastic buckets and tap can be produced locally, while Ceramic candle is imported for filtering treatment component. Plastic buckets size can either be larger o smaller. 11 Figure 1.2: Ceramic Candle Filter(Candle Filter) Advantages of Candle Filters are: Easy to use. Treats contaminated water (eliminates bacteria). Removes turbidity. Cheaper than the silver filter (it cost about700-1000 YR in 2008). Produces water, less costly effective than bottled water. No need for electricity power. Disadvantages of Candle filters are: Possible breakage during cleaning, difficult to clean. Requires regular cleaning. Does not remove viruses, pesticides, or chemicals. Candle filter unit (candle bar) needs to be replaced after 6 – 12 months. Candle filter unit (bar) can be replaced by households themselves, so sometimes it could not be fixed properly, which will effect filtered water quality. Filtered water is not enough for big families, but larger plastic buckets can be used. 12 The Role of Women in Water Management As already mentioned women in these villages are responsible for fetching water from water sources and spend a lot of time each day to fetch water for household needs. CARE started the Rural Women’s Empowerment Project in Al-Mahweet governorate, Yemen, through establishing of local women’s associations (LWAs) in rural areas. In March 2004, CARE setup a LWA in Yelaan and Sawaan, called Al Tafuq, which was funded by the German Government (a BMZ funded project). Since July 2006, the rural women empowerment projects had provided assistance to the LWA in the form of capacity building. This LWA has 75 members and constructed a literacy class for women, before implementing the water project which targeted at the first round 30 women, who were trained in basic reading and writing. CARE and GTZ later implemented in 2008 a poultry unit as an Income Generating Activity (IGA) The second LWA was established in Al-Dahabishah village (Bani Saad district) constituting of 57 members for which a literacy class was constructed. The IGA in Al-Dahabishah is a bee keeping (honey bee farm). However, the literacy classes, water projects and IGAs are managed by LWAs. In addition, women in the three villages play a major role in water quality improvement.(CARE, July, 2008). Training and Awareness Many awareness campaigns for men and women were conducted on water borne diseases, hygiene and sanitation, in addition to training on testing the filtered water to be used for drinking and training on the maintenance of water filters. This will rise up households awareness on hygiene, especially about diarrhoea to improve households health and socioeconomic. 13 Objectives This study was conducted to evaluate the implemented water projects in Yelaan, Sawaan, and Al-Dahabishah villages based on IWRM perspectives over a period of 6 months as follows: - Study changes in water quantity and quality after constructing new water supply systems. - Study the effectiveness of provided water filters in Yelaan and Sawaan villages in AlMahweet Governorate. - Evaluate the role of gender (men and women) in water management in the villages under study. 2 Methodology 2.1 Field Study Many field visits were conducted in three villages Yelaan, Sawaan and Al-Dahabishah in AlMahweet Governorate, Yemen. The purpose of such visits was to collect baseline data about villages, population and their activity. In addition, the study covered water borne diseases, households health, changes in water quality, quantity and socioeconomic either before implementing water project or after. The study implied role of women in project management, the effectiveness of water filters in water quality and health. Global Position System GPS readings were taken for every village to determine their location. See map 1.2. 2.2 Baseline Data Collection Baseline data for the villages were gathered by the author as required in a field survey during December 2007 to January 2008 (demography, topography, education, climate, water 14 sources, water quality, quantity, and health, etc). Furthermore, such data were obtained from CARE Yemen reports and the Central Statistical Organization (CSO). A situation analysis was carried out at field level to collect data about water management, health, socioeconomic, activities and services provided in all villages, which are under study. Such data were used to evaluate situation in the villages before and after implementation of water projects within IWRM aspects. 2.3 Preparation of Questionnaires and Conduct of Field Visits Three types of questionnaires (see annex A) were designed through face to face interviews, which were randomly conducted with men and women in the villages. The 1st questionnaire included questions to analyze situation prior to implementation of the water projects at the field level concerning water quantity, quality, health, time consumed to collect water, education, services, activities etc for each village. The 2nd and 3rd questionnaires were prepared to study impact of water filters distributed among households and impact of the constructed water systems in the villages (twice after three and six months) of such implementation respectively. These questionnaires were designed to evaluate health and socioeconomic impacts on the households and to what extent the IWRM concept was successfully applied for all villages. The questionnaires included questions about improved water quantity and quality (improvement of health and socioeconomic aspects), changes in filters efficiency, time saving for women, changes in attitudes of households towards water uses and finally sustainability of the projects. In addition, focus group discussions were held with some women from the Local Women Association (LWA), with Sheikhs of the villages, school teachers and other individuals. The number of households, who were interviewed in each field visit in all villages, is described in table 2.1. 15 Number of households Number of households interviewed after interviewed before start using water filter, and implementing the implementing the water water project project Village 1st Visit (questionnaire#1) 2nd Visit 3rd Visit After 3 months After 3 months (questionnaire#2) (questionnaire#3) Yelaan 9 10 22 Sawaan 14 10 28 Al-Dahabishah 15 18 0 38 38 50 Total Table 2.1: Total number of households, who were interviewed in each visit Technical Studies The technical studies included water samples collection, water testing and analyzing in the field (villages) and at NCPHL as described below: 2.4.1 Water Sampling Water samples were randomly taken and collected from different locations (water sources, and households) to know where possible contamination could takes place by testing water quality. A total of 122 water samples were collected from the villages, (from water sources and randomly chosen households) prior, and after use of water filters. These water samples (88) were tested at the villages (field) and 34 at NCPHL (Sana’a). The exact number of water samples per village is presented in table 2.2. 2.4.2 Water Testing and Analysis Two types of water testing were carried out, namely: 2.4.2.1 Water Testing Processing and Analysis in The field (villages) 16 All collected water samples were tested for physicochemical and microbiological parameters, before and after the use of the water filters. In order to show the effect of the water filters and the project, water sampling analysis were conducted before the project implemented and after start of the project (1, 3 and 6 months) respectively. Water analysis were conducted by using Oxfam DelAgua kit, which can be used in thefield for testing water color, odour, turbidity, pH and faecal coliforms (E. coli). 2.4.2.1.1 Physical Water Quality Parameters - Color - Odor - Turbidity 2.4.2.1.2 Chemical Water Quality Parameters (pH) 2.4.2.1.3 Biological Water Quality Parameters. 17 Figure2.2: Oxfam DelAgua kit tools, which was used at field for water test 2.4.2.2 Water Testing and Analysis at (NCPHL) in Sana’a The water samples tested in NCPHL, samples were taken correctly and transported as soon as possible in a carton box from the villages to Sana’a city. The box was used to prevent water samples from sunlight and avoid bacterial growth. At a laboratory, water samples were tested and analyzed for many parameters, which were pH, Total Dissolved Solids (TDS), Total Suspended Solids (TSS), Total Hardness (TH), calcium hardness, bicarbonate (HCO3-), chloride (Cl-), sulfate (SO4-), sodium (Na+), potassium (K+), calcium (Ca2+), magnesium (Mg2+), manganese (Mn2+), copper (Cu),iron(Fe2+), lead (Pb), cadmium(Cd), and microbiological (total and faecal coliforms). 18 Laboratory tests, also were carried out to ensure data accuracy as a backup for water testing at field level for biological parameters and to see if there is any change in water quality before and after use of water net system and water filters. As a reminder, water filters in the villages are not made or not used for chemical treatment. Table 2.4 summarizes total tested samples per village, which were tested at the field (villages) and at NCPHL. Table 2.4: Number of water samples per village, which were tested at the villages and at NCPHL Prior to filter Total Past filter distribution and use distribution samples Test 1 Village Test 2 Test 3 Test 4 Prior to use W.F After 1 month After 3 months After 6 months Before After Before After Before After Before After Yelaan1 9 0 4 4 0 9 2 6 34 Sawaan1 7 0 4 4 1 5 1 7 29 Al-Dahabishah1 0 0 0 0 0 0 9 16 25 Yelaan2 5 0 0 4 0 4 0 4 17 Sawaan 2 5 0 0 4 0 4 0 4 17 Total samples 26 0 8 16 1 22 12 37 122 Data Analysis and Interpretation All gathered data of the questionnaires and water quality tests were analyzed using Microsoft Excel. The purpose of analysis and interpretation of the data was to evaluate impact of the water projects (water filters, water net systems and IGAs) within IWRM aspect on the following: 19 1. Water management changes: using water net system (water storages, water pipelines and water filters), will improve water quality and increase collected water quantity by preventing water from losing and filtration. 2. The effectiveness of water filter: after use of water storages, water pipelines, drinking water will be cleaner than before, but not clean from E. coli (not safe), so householders use water filters to kill this bacteria. If water filters are effective, they will reduce diarrhoeal diseases and all households have access to clean water (equity). This will improve households health and save diarrhoea treatment money, which will improve socio-economic of the households. 3. The effectiveness of water storage and water net to saving time: Using water storage and water pipelines, it will also save a lot of time for collecting and transporting water for daily uses, especially for women and girls in dray seasons. Having said that, they can use this time to do any other activities, which could improve family-income (socio-economic). 4. Improve education: saved time, as motioned above will give opportunity for women to join literacy classes and girls to join schools, in addition to attend to water test training and awareness. By doing so, education in the villages will increase (improved) and raise up their awareness on the importance of clean drinking water, using water filter to reduce diarrhoea. This will also improve socio-economic and health. 5. Health and socioeconomic of households: all above mentioned factors will improve health (reduced water borne diseases), socio-economic and livelihoods of households. 6. Role of women on the project: women play a key role in water use and water project management. They are responsible for collecting water for daily uses, cleaning water filters also cooking and providing drinking water for all family members. Additionally, women and girls will be involved in awareness campaign, literacy classes and schools, this will improve their education and raise up level of awareness on water borne disease and general 20 health. Women will join local associations (LWA) and make use of IGAs revenue under LWA management. Involving women within LWAs (as staff), IGAs, water projects and literacy classes management, all will form factors that give power for women to learn reading, writing self-confidence and take role as decision makers in regard to water project management. 7. Sustainability of the project: improving women skills in education and management, in order to build up their confidence, and then be able to use the revenue from IGAs for operate and sustain IGAs themselves, literacy classes and water net system maintenance, which will lead to water project sustainability. Thus, all of above mentioned factors will improve livelihood of the households in the study area. Training and Awareness Many awareness sessions were conducted in classes in the villages for both women and men on the importance of water quality for health, especially children, water borne pathogen and hygiene. The sessions were conducted by the author and CARE consultant to rise up women awareness. A little amount of money (500YR) was given to every woman or man, who participated in such awareness sessions to encourage them to attend. In addition, many training sessions on testing drinking water from filters and without using filters, were conducted for some men, and women (including some LWA members) of the villages. Drinking water quality testing targeted some water quality parameters to proven to households that drinking water is clean and water filters killing bacteria. The above training and awareness created positive effect in importance of drinking water quality especially for children, using water filter and reducing diarrhoeal diseases, which will improve health and socioeconomic. (CARE, July 2008) 21 Photo 2.1.Women and Men awareness sessions for both (Yelaan and Sawaan)villages 22 3 Results and Discussion As a reminder for the reader, the main project was carried out by CARE started first in Yelaan and Sawaan villages to establish a new water system and introduce Silver Filters to their community. Later on, CARE added Al-Dahabishah village to the project by introducing the Candle Filters. The overall goal was to provide villagers in Al-Mahweet governorate with sufficient and clean potable water. 3.1 Baseline Data 3.1.1 Study Area Al-Mahweet governorate is situated in the Western Highlands of Yemen (about 2100 meters above sea level), 111 km north-west to Sana'a city, capital of the Republic. It’s boundaries from the north are Hajah and Amran governorates, from the east Sana’a governorate, from the south Sana’a and Al-Hodaidah governorates and from the west Al-Hodaidah governorate. Al-Mahweet governorate consists of 9 administrative districts namely Al Khabt, AlMahweet, Al-Mahweet City, Al Rujum, Al-Taweelah, BaniSaad, Hufash, Milhan, and Shibam Kawkaban. The area of Al-Mahweet governorate is about 2452 km2. This study was conducted in Yelaan and Sawaan villages located in Al-Taweelah district and Al-Dahabishah village situated in Bani Saad district(ar.Wikipedia.org), (Census, 2004). 3.1.2 Topography and Climate The topography of Al-Mahweet governorate varies from mountainous to plain areas. The mountainous region is covered partly by vegetation and is famous for its many fortresses and is laced with springs. The plains consist of deep and large wadis (valleys) such as Wadi Sar'a, Wadi Al-Ahjur and Wadi Al-Iyoun. Rainwater runoff flows from mountains and wadis to the western coastal plain, then to the Red Sea. Yelaan and Sawaan villages are 23 mountainous areas with an average elevation of 2350 m. Al-Dahabishah is a village situated in a deep wadi (Wadi Sar'a) with an average elevation of 670 m (own GPS reading). The climate in mountainous areas of Al-Mahweet governorate according to the author’s own observation is cold in winter (0-15 °C) and moderate to hot (15-30°C) in summer as in Yelaan and Sawaan villages. However, in the plains bordering like the Tihama Strip or wadis, climate is hot in summer (20-40°C) and almost moderate to cool in winter (5-20°C) as in AlDahabishah village. 3.1.3 Geology of Al-Mahweet The topography of Al-Mahweet is various, between mountain plain, rock plateaus and basins with scattered outcrops. The basin of Al-Mahweet was formed by separation of the Arabian peninsula from the continent of Africa during the period (45-15) million years and formed sediment of silt and clay, which is suitable for agriculture (El-Anbaawy, 1985). The important outcrops of Al-Mahweet area are the Amran Group (carbonate rocks) and AlTawilah Group (clastic rocks) (Fig. 3.1). There are many faulted systems, mostly of it NWSE trending structure, Which is the same direction as the opening of the Red Sea (Map. 3.1). In addition, there are many formations (rock units) formed in Al-Mahweet area as follows: Basement rocks. The basement consists mostly of highly metamorphosed rocks (quartzite, marble and schist etc) ranged in age from Archean to Early Proterozoic and slightly metamorphosed Late Proterozoic to Early Cambrian complexes. The sedimentary sequence of Al-Mahweet area is composed of different rocks ranged in age from Cambro-Ordovician to Cretaceous age (Fig. 3.1). The sedimentary sequence of this basin, which overlies the basement rocks, starts with the following rock units from base to top ( Beydoun et al, 1998): Wajid Formation. 24 Wajid sandstone formation, mostly consists of fluvial sandstone deposited in CambroOrdovician age. Akbara Formation. Akbra shales (Permian age) is composed shale with minor sandstone. The depositional environment of Akbara formation is Glacial environment (Beydoun et al, 1998). Kuhlan formation. Kuhlan formation (Bathonian to Kimmeridgean) it represents the basal Jurassic rock unit, which is composed of sandstone with minor amounts of conglomerate, shale and limestone. Amran Group. This group age is Jurassic older than AL-Tawilah Group. It consists of many formations, starting from bottom to top of group as follows: Shuqra Formation: (Oxfordian to Kimmeridgian). This formation had been deposited in a broad shallow shelf environment. This unit is predominantly a platform carbonate with local reefal build-up. Madbi Formation: (Kimmeridgian to Tithonian). It consists of various facies including shallow to relatively deep marine carbonate, shallow marine sandstone, turbidite and organically rich mudstone. Naifa Formation: (Tithonian-Berriasian). This rock unit consists of argillaceous limestone and calcareous mudstone with minor sandstone mainly deposited in shallow water environment. Tawilah Group: (Cretaceous). The original type section was described by Lamare (1930) in Jable AL-Tawilah, which is the centre of district Al-Tawilah, Al-Mahweet governorate. It is about 50 Km NW Sana’a city. The thickness is about 200-300 m. Yelaan and Sawaan are located in Al-Tawilah district (Beydoun et. al, 1998). AL-Tawilah sandstone is a good aquifer and recharge the ground 25 water. Lithology of AL-Tawilah Group is sandstone, white to yellowish and brown, fine coarse grain, gravely and cross bedded sedimentary structure. The beds of Al-Tawilah group cutting by intrusion of dyke and tertiary volcanics. Stratigraphic sections of AL-Tawilah group occurs in many places in Yemen, within the tertiary volcanic rocks. Quaternary rocks. The Quaternary rocks at the top of the geological formation mostly, lacustraine deposits, loests and ancient dunes, gravel, older alluvium as conglomerate and active alluvium (ElAnbaawy, 1985). 26 27 Map 3.1: Geological map of Al-Mahweet area (study area) Figure 3.1: Lithostratigraphy of the Sana’a and Al-Mahweet basins (Beydoun et al, 1998). Population Al-Mahweet governorate has a total population of 495 045 inhabitants according to the 2004 census (Census, 2004). The population of villages under study according to the 2004 census are given in detail in table 3.1 while those as of date of field survey (November, 2007) are reflected in table 3.2. (CARE, April,2008) 28 Table 3.1: Population of Yelaan, Sawaan and Al-Dahabishah villages (Census, 2004) No. of Village District Population No. of Males Females Houses Families Yelaan Al-Taweelah 315 32 16o 155 41 Sawaan Al-Taweelah 404 24 185 219 47 Bani Saad 333 72 146 187 63 Al-Dahabishah Table 3.2: Population of Yelaan, Sawaan and Al-Dahabishah villages from field2 survey (CARE, 2008) with Census 2004 Population No. of Families Village 2004 2007 Yelaan The 2004 2007 41 41 Sawaan 719 700 47 46 Al-Dahabishah 333 350 63 40 baseline data survey revealed that the majority of households (about 70%) in all 3 villages have 5-10 members as shown in table 3.3. Table 3.3: Family size (number of persons in every household) of 3 selected villages Village Total Number of Sawaan Yelaan Al-Dahabishah % % % persons 2 % In specific: the differences in Population and No. of families in 2004 and 2007 survey because of some houses( families) was faraway from villages and not including in water projects. 29 <5 21.4 11.1 6.7 13.1 5 – 10 64.2 77.8 66.7 68.4 11-15 14.2 11.1 20.0 15.7 > 15 0 0 6.7 2.6 3.1.4 Socio-economic Most people in these villages depend on agriculture and cattle breeding for their income. They cultivate crops, such as sorghum, alfalfa, wheat and barley, on terraces mainly for household consumption. They cultivate Qat, which consumes a lot of water, however, it is considered as an important cash crop. It is more and more replacing other essential crops of high nutritional importance. Cattle breeding as cows, goats, sheep and chicken breeding are the main activities for self-subsistence and income. Some men work as teachers or soldiers, while some others are self-employed in free trade and handicraft. Some men work abroad of Yemen, and some families migrated to the bigger cities due to water scarcity and for better job opportunities (CARE, April,2008). 3.1.5 Public Services Schools Most villages in Al-Mahweet have limited basic educational services. There is one school for both Yelaan and Sawaan for basic education (up to grade 9) with 163 students (113 boys and 50 girls). In Al-Dahabishah, education is only available up to grade 6 for both boys and girls. Before implementing the water project, in 2004, CARE constructed one literacy class for women of Yelaan and Sawaan managed by a Local Women Association (LWA) called Al Tafuq, which started in March 2004 with the assistance of CARE and financial support of the German Government (BMZ). In 2006, CARE constructed one literacy class for women in AlDahabishah. Every class is managed by the LWA in the village, while CARE provided them 30 with training material. The salary of a young female teacher is being paid by the IGA revenue. The first group of 20 women in Yelaan and Sawaan literacy class, the time of first group was for 9 months. Electricity No public electricity exists in the three villages. Most households use small electric generators for lighting at night, TV and charging mobile phones, while some households (the poorest) use gas or kerosene lamps for lighting at night. Transportation In all villages under study, there is no public transportation. Steep, bumpy, gravel roads connect the villages with the capital of district. Besides, most people use cars for transportation. Al-Dahabishah village is about 13 km (30 minute by car) away from Bani Saad (capital of district) and 177 km from Sana’a city ( about 4 hours by car). In AlDahabishah village, the government started to construct a new paved asphalt road in Wadi Sara'a, close to the village, connected to Bani Saad and Al-Mahweet city. The distance from Yelaan and Sawaan villages to Al-Taweelah (capital of district) is about 8 km (1/2 hour by car), while the distance to Sana’a city is 87 km (2 hours by car). Communication For communication, people use mobile phones, while public telephone and internet networks are not available in the villages. Water Resources No public water network exists in the villages. The source of water in Yelaan is a spring which drips slowly like a small shower from a mountain cliff into a small clay basin or collection area. Sawaan water source is a spring which merges between two rock layers and collects in a small basin. A lot of water gets lost, dripping away by wind, and evaporating 31 without being collected. Additionally, water is lost by infiltration in the clay basin, which increases water scarcity. Before implementing the water project, the water source for major households in AlDahabishah until 2006 was a spring, water flow into a water bed (rain water runoff). The water yield is low and some water is lost by infiltration. In addition, 3 private open manual water wells are used by their owners for drinking and agriculture purposes. Under the supervision of CARE, the well owned by the Sheikh of the village was deepened further from 20 m to 30 m and connected with a new water network (storage and pipelines) including a water pump. Since then, this well has been used as a main drinking water source for the village, but still remaining uncovered (exposed to contamination). In all villages, water is mostly available all year long, but neither securing water quantity nor quality as the sources are unprotected. Water collection is a time consuming task, as water is dripping down slowly particularly in Yelaan and Sawaan. Additionally, the roads of about 1 to 2 km from the centre of villages to the water sources are steep. Women and girls are mainly responsible for domestic water collection, spending an average of two hours per day. Attending school is therefore a great challenge for girls at school age. Two schemes with an overview of water sources, water project and public services are shown in figure 3.1 and 3.2 for Sawaan and Yelaan, and Al-Dahabishah villages, respectively. (CARE, April,2008)& (CARE, July, 2008). 32 Figure 3.2: Water system schematic for Yelaan and Sawaan villages (CARE, April,2008) Figure 3.3: Water system schematic for Al-Dahabishah village 33 Before implement water projects, table 3.4 indicates that a total of 84.2% of respondents in all villages collect water more than three times per day. The lower frequency of collecting water per day in Sawaan could be due to water scarcity, smaller family size and using donkeys to transfer larger water quantities, whereas the higher frequency of water collection per day in Yelaan could be due to the difficulty to pass the bumpy road to the source by donkeys or due to bigger family sizes. Table 3.4: Frequency of collecting water per day in 3 selected villages Village Frequency of collecting water per day Total Sawaan Yelaan Al-Dahabishah % % % % Once 7.1 0 0 2.6 Twice 0 0 0 0 Three times 14.2 11.1 13.3 13.1 More than three 78.7 88.9 86.7 84.2 Water is collected in jerry cans (plastic containers) of about 20 L. Nearly 57.1% and 77.8% of households in Yelaan and Sawaan, respectively, collect 100-180 L/day, because of water scarcity, while in Al-Dahabishah about 73% of households collect quite over this rate, see table 3.5. Higher water consumption in Al-Dahabishah might be referred to higher temperature in the wadi and due to larger family size (more than 15 family members). In Yelaan the majority 88.9% collecting water more then 3 times (they transfer water on foot only, table 3.6). 34 Table 3.5: Estimated amount of water collected by households in liter per day in 3 selected villages Village Sawaan Yelaan Al-Dahabishah Total % % % % 40 – 80 l/day 28.5 22.2 6.7 18.4 100 – 180 l/day 57.1 77.8 20 47.3 200 – 280 l/day 14.2 0 46.6 21 0 0 26.7 10.5 Amount of water + 300 l/day All households in Yelaan and Sawaan transfer water from the sources to houses mostly on foot as there is no car passage (no road). In Al-Dahabishah, all households transfer water by donkeys, in addition 53.3% transfer water on foot and 26.6% partially by cars (before water project). Some households use both methods during periods of water shortage. They transfer water filled in jerry cans from other villages, which are close to Al-Dahabishah using cars, then further by donkeys or on foot to houses. Table 3.6: Methods of water transfer from sources to houses in 3 selected villages Village Methods Sawaan Yelaan Al-Dahabishah % % % On foot 100 100 53.3 By donkey 7.1 0 100 Others (car) 0 0 26.6 The potential risk factors for diarrhoeal illness according to respondents might be the existing open sewage systems as a possible cause of water source pollution or contamination in households of Sawaan (71.4%), Yelaan (88.9%) and Al-Dahabishah (33.3%) as seen in table 35 3.7. Although, many old houses do not have latrines (open defecation), the absence of latrines seems only to be the second risk factor according to 40% of respondents in Al-Dahabishah and 21.4% respondents in Sawaan. This might be an indication of lack of awareness about the causes of water source contamination and as has been confirmed by respondents in later questions. However, it is noticed that hand washing after defecation and washing prior food preparation seems not to be a high potential risk in Sawaan and Al-Dahabishah with some exceptions in Yelaan, due to lack of knowledge and weak awareness. In some villages, more than one potential risk health factor might cause diarrheal diseases. Table 3.7: Frequency of potential risk factors for diarrhoeal illnesses before water filters used by households of 3 selected villages Village Potential risk factors Sawaan Yelaan Al-Dahabishah % % % No latrine 21.4 0 40 Open sewage system 71.4 88.9 33.3 Closed sewage system 7.1 11.1 26.7 0 22.2 0 *No hand washing *No hand washing after defecation and prior of food preparing Water Quality For water analysis results, (refer to tables 3.24, 3.25, 3.26), almost all water sources (households and natural sources of water) were contaminated with faecal coliforms prior to implementing the water projects in villages under study, noting that water sources being not protected. Health Care 36 Before implementing the water projects and prior to the use of water filters, the frequency of diarrhoeal illnesses among children was high, especially in the age group under 5 years. The average diarrhoeal incidences during the last 3 months was 86.8% of total households and seems to be a major health problem in the three villages under survey, see table 3.8. The high frequency of diarrhoeal illnesses might be an indication of microbiological water source contamination (faecal coliform) particularly in Yelaan and Al-Dahabishah, where the water sources are open and therefore unprotected. The low frequency of diarrhoeal illnesses in Sawaan might be referred to the relative clean water source (from rocks), but improper water handling during and after water collection, causing contamination (see water sample test results). Table 3.8: History of diarrhoeal illnesses among children prior to the use of water filters in 3 selected villages Frequency of Village diarrhoeal Total Sawaan Yelaan Al-Dahabishah % % % % Positive (yes) 78.6 100 86.6 86.8 Negative (no) 21.4 0 13.3 13.1 illnesses 3.2 Impact of Study 3.2.1 Use and Effectiveness of Water Filters A total of 52.6% households located their filters in the sitting room (almajles) after one month of distributing water filters (table 3.9). Almajles is a sitting room, where the family spends its time with guests. However, 34.2% placed water filters in the living room (hall). The living room is usually a hall, where the family has its daily meals. The reasons for choosing these locations were for filter accessibility (65.7%) and for safety (37.3%). 37 Table 3.9: Placement of water filters and reasons for location selection, in 3 selected villages Village Places and reasons Sawaan Yelaan Al-Dahabishah Total % % % % Kitchen 10 10 5.6 7.8 Living room (hall) 30 40 33.3 34.2 Sitting room(almjles) 60 40 55.6 52.6 Storehouse(inside home) 0 10 5.6 5.2 Safe 10 60 61.1 37.3 Easy accessible 80 60 61.1 65.7 Clean 20 30 22.2 23.6 No reason 10 0 5.6 5.3 Place Reasons to choose place After 3 months of filters usage, in 100%, 60% and 83.3% of households in Sawaan, Yelaan and Al-Dahabishah, respectively, all family members have had access to filtered water. Traditionally, priority in accessing filtered water was given to men while chewing Qat, in particular in 30% and 16.7% of households in Yelaan and Al-Dahabishah, respectively. Table 3.10 clearly indicates an increased distribution of filtered water for children and women after 6 months in Yelaan and Sawaan. The main consumers of filtered water after six months by all family members reached about 72.7% in Yelaan and 50% in Sawaan. According to 21.4% and 18% respondents of Sawaan and Yelaan, respectively, only children were drinking filtered water, which was not the case after 3 months. The increase in the consumption of filtered water by children after 6 months is a positive sign for increasing in awareness. Women drinking filtered water increase after 6 months to 25.4% and 4.5% in Sawaan and Yelaan. This change may be interpreted as increased gender sensitivity among the population or increased awareness of the importance of keeping women health's upright. 38 Table 3.10: Main consumers of filtrated water, in 3 selected villages after 3and 6 months of use water filters After 3 months Consumers of Sawaan Yelaan % % Men only 0 Women only Children only filtered water All family members After 6 months Al- Al- Sawaan Yelaan % % % -- 30 16.7 7.1 13.6 -- 0 0 0 25.1 4.5 -- 0 10 0 21.4 18.1 -- 100 60 83.3 50 72.7 -- Dahabishah Dahabishah Drinking filtered water in and out door reveals for about 40-80% and 30-50% of households, respectively, after 3 months as shown in table 3.11. In Al-Dahabishah, this percentage is less than other villages, which might be an indication of the insufficiency of filtered water. The remaining households in the villages almost drink unfiltered water. Drinking bottled or clean potable water (filtered water) became a habit in many Qat sessions in urban and rural areas giving people a prestigious status. Men and women from less wealthy families in this villages try to keep up with wealthy people. In the villages under study, men of about 40-50 % of households drink filtered water in Qat sessions. Improving health could be a reason to an increased willingness of buying or repairing the water filter. Women in general, chew much less Qat than men, however, women in about 66-80% households have access to filtered water as men, giving an indication of equity and a common understanding of the importance of drinking filtered water by all family members. Table 3.11: Place and purpose of drinking filtered water, after 3 months, in 3 selected villages 39 Village Sawaan Yelaan Al-Dahabishah % % % In-door 80 80 39 Out-door 50 40 27.7 Men during Qat sessions 40 50 39 * Women 80 80 66.7 Drinking filtered water *Women drinking filtered water (in equity) as men. After 6 months of filter distribution and usage, it was observed that filtered water is almost used for drinking purposes only in 90.9% and 60.7% of households in Yelaan and Sawaan, respectively (table 3.12). The high percentage of filtered water used for “drinking only” in Yelaan might be referred to the fact that its source is more turbid (abou16 NTU) leading to longer filtration time, in addition to its higher family size (77.8% between 5 -10 members) than in Sawaan as in table 3.3. Table 3.12: Use of filtered water after 6 months in Yelaan and Sawaan villages Village Use of filtered water Sawaan Yelaan % % Cooking + Drinking 39.2 13.6 Drinking only 60.7 90.9 3.2.2 Health Impact After 3 and 6 months of water filters used it is observed that there is a sharp decrease in the diarrhoeal frequency in all villages as shown in figure 3.4. In Sawaan, diarrhoeal incidences have decreased from 78.6% before using silver filters (SFs) to 10% after 3 months from using SFs, where in Yelaan they have decreased from 100 % to 20%. This is a very good improvement in health as a result of filters use and awareness. However, these incidences 40 increased to a small extent after 6 months to 14.2% in Sawaan and 45.4% in Yelaan. In AlDahabishah, the diarrhoeal frequency decreased from 86.6% before using candle filters (CFs) to 50% after 3 months of using CFs. However, after 6 months the efficiency of filters was not evaluated in Al-Dahabishah. Being said that the decrease in Al-Dahabishah is less than in other villages could be referred to the improper handling of candle filters and/or using contaminated jerry cans for storing cool water (hotter climate). The decrease in diarrhoeal incidences after 3 months in all villages might be an indication of proper filter handling and the increase in awareness about the importance of health among households. The diarrhoea in Yelaan and Sawaan after 6 months more than after 3 months, might be an indication of improper collection, cleaning and storage of filtered water, in other words, this could be attributed to insufficient awareness on proper handling of filters or jerry cans. Cleaning of water filters and jerry cans might have become an additional routine work on the burden of women leading to carelessness. Another reason for the increase in diarrhoeal incidences, particularly in Yelaan could be the rainy season, which flashes down wastes to open water sources causing more contamination by faecal coliform. Figure 3.4 showed Positive (occurrence) frequency of diarrhoeal incidence in the villages 41 Figure 3.4: Frequency of diarrhoeal incidence among respondents in the villages Table 3.13 with figure 3.4 shows a reduction in diarrhoeal diseases after water filters used. From questioners before water filters used, Only children under 5 years, who had diarrhoea were questioned, others were not asked, so it indicates that the infected group by diarrhoea were children under 5 years age, Sawaan 78.6%, Yelaan 100% and Al-Dahabishah 86.6%, respectively. After 3 months of using water filters, diarrhoeal diseases were reduced. Households who had diarrhoeal diseases, that 10% in Sawaan (all of the infected were children 100% under 5 years old) and in Yelaan 20% had diarrhoea, out of them 50% children under 5 years old and 50% children up to 18 years old. In Al-Dahabishah 50% had diarrhoea, out of 89% were children under 5 years old and 11% children up to 18 years old. However, after 6 months of using water filters, 14.2% in Sawaan and 45.4% in Yelaan were infected with diarrhoea. Out of 75.3% were in Sawaan and 80% in Yelaan from infected households with diarrhoeal frequencies were children under 5 years old. However, 24.6% in Sawaan and 20% in Yelaan were children from 5 to 18 years old. Adult whose ages are above 18 years didn't suffer any more from diarrhoea in all villages. It is clear that water filters reduced diarrhoeal disease, but most the infected were children under 5 years old. The main reason for diarrhoea in children is mostly faecal coliform from drinking water. Children are mostly the category of higher risk for diseases as their immunity in general is not stabilized as that of adults. There might be other risk factors playing a role herein than contamination of drinking water as playing in an unhealthy environment. See figure 3.4 and table 3.13. Table 3.13: Percentage of diarrhoeal occurrences according to age before and after using water filters for 3 and 6 months, in 3 selected villages 42 Diarrhoeal Before filter use 3 months after filter use occurrence according to Sawaan Yelaan % % 78.6 5- 18 years old Adult age Under 5 years old Al- Sawaan Yelaan % % % 100 86.6 100 -- -- -- -- -- -- Dahabishah Al- 6 months after filter use Sawaan Yelaan % % % 50 89 75.3 80 0 50 11 24.6 20 0 0 0 0 0 Dahabishah After 3 months of filters use and construction of the new water system, more than 76% of households in all villages have experienced improvement in general health(water borne diseases reduced) and saving money (less medical treatment expenses) and time (less time used for water collection), see table 3.14 and figure 3.4. This improvement indicates a positive and successful impact of both interventions. Table 3.14: Improvement in household’s health, economy and time saving after 3 months of implementing the water project Village Improvement Total Sawaan Yelaan Al-Dahabishah % % % % Health 80 90 72.2 78.9 Money saving 80 70 77.8 76.3 Time saving 70 90 72.2 76.3 Eighty percent of households in Yelaan stated that the reason of health improvement (reduced water borne diseases) was due to the use of water filters as the water from the source is highly turbid and contaminated (table 3.15). In Sawaan and Al-Dahabishah, 80% and 50% of households, respectively, believe that the health improvement is referred to both, the use of 43 filters and the newly constructed water net system. The water network (storage and pipelines) keep drinking water unexposed to contamination and the filters kill bacteria. In Sawaan, nobody believes that filters only contribute to the improvement in health because their water source is relatively clean. Table 3.15: Main reasons for health improvement after 3 months of project implementation in 3 selected villages Village Reason for health Sawaan Yelaan Al-Dahabishah Total improvement % % % % Water net system only 20 10 22.2 1 8.4 Filters only 0 80 27.8 34.2 Both 80 10 50 47.3 3.2.3 Impact on Education As mentioned earlier, women and girls have saved time by installing the water net system. The water net system (water storage and pipelines) became close to villages so that after 6 months 71.4% of respondents in Sawaan and 90.9% in Yelaan, respectively agreed to enrol their children (girls) at schools and women may join literacy classes. However, 21.4% respondents in Sawaan and 4.5% in Yelaan did not change their attitude towards the importance of girls education. It is most likely that women and girls should conduct other activities to improve the income of the family. The health and socio-economy of households in my opinion will improve as a consequence of improved girls and women education. It is assumed that the next generation will accordingly get better education and the overall quality of life will be improved. Table 3.16: Attitude of respondents towards the enrolment of girls at schools after 6 months of project implementation in Yelaan and Sawaan villages 44 Village Attitude towards Total Sawaan Yelaan % % % Positive (yes) 71.4 90.9 80 Negative (no) 7.1 4.5 6 No change 21.4 4.5 14 girls education 3.2.4 Awareness Impact After 3 months of project implementation, respondents seemed to be satisfied to an extent of “GOOD” with the effectiveness of awareness campaigns (90% in Yelaan, 70% in Sawaan and 66.7% in Al-Dahabishah), see table 3.17. A positive change of household’s attitude towards hygiene, water borne diseases and water filters used was observed. However, the positive effectiveness from awareness sessions decreased after 6 months as 25% and 41.1% of respondents in Yelaan and Sawaan, respectively believed that awareness campaigns were ineffective. Reasons mentioned were the unavailability of some households to attend these sessions for being busy, the limited space of venue (small literacy classrooms) and in some cases, women were not allowed to join men in the same classroom. Another reason for such decrease in attendance could be the unattractive awareness material. Generally, only one person per some household attended these sessions, some families never attended at all. This indicates the need for more awareness sessions, involving members from all households. Table 3.17: Effectiveness of awareness sessions after implementing water projects on the percentage of households in the villages Effectiveness After 3 months After 6 months of awareness % of households % of households sessions Sawaan Yelaan Al-Dahabishah Sawaan Yelaan Al-Dahabishah Good 90 70 66.7 23.5 31.2 -- Weak 10 30 27.8 52.9 43.7 -- No effect 0 0 5.6 41.1 25 -- 45 3.2.5 Socio-economic Impact Medical treatment for diarrhoeal diseases costing up to 5000 YR were found in households of 20%, 40% and 22.2% for Sawaan, Yelaan and Al-Dahabishah, respectively, before implementing the water projects. These expenses decreased to 7.1% in Sawaan and to 22.1% in Yelaan after 6 months of filter use. However, expenses over 5000 YR decreased from 30% to 22.7% households in Yelaan. The decrease in treatment costs is supported by the decrease in diarrhoeal incidences in general. Respondents said that they have saved money due to less diarrhoeal treatment as a result of using the new water pipelines network and water filters in the villages which improving their socio-economic status. Being said that households of 85.7 % in Sawaan and 54.5 % in Yelaan did not spend any money for treatment, is not necessarily an indication of the decrease in diarrhoea, but might be the attitude towards unnecessarily spending money for treatment, were traditional household treatment might help. Table 3.18: Incidence of spending money on treatment of diarrhoeal diseases, before filters distribution and after 6 months of used water filters in the villages Cost of diarrhoeal treatment Before use water filters 6 months after use water filters % of Households % of Households Sawaan Yelaan Al-Dahabishah Sawaan Yelaan Al-Dahabishah No cost 80 30 11.1 85.7 54.5 -- up to 5000 Y.R 20 40 22.2 7.1 22.7 -- >5000 Y.R 0 30 66.6 7.1 22.7 -- Table 3.19 shows that cleaning water filters is generally the responsibility of housewives. In Sawaan and Yelaan, it was observed that “only women” were responsible for cleaning the silver filter, while in Al-Dahabishah, men were involved in 5.6% of households in cleaning the candle filters. An irregular cleaning of filters (when filters become dirty) was observed in 46 10%, 50% and 72.2% of households in Sawaan, Yelaan and Al-Dahabishah, respectively. The frequent irregular cleaning of filters in Al-Dahabishah and Yelaan could be due to the higher turbidity of water sources. However, in Sawaan, 90% of households clean filters weekly, which could be an indication of the clean water source in Sawaan. It has to be mentioned that a cleaning brush was provided with each silver filter, but not with candle filters. The brush was used effectively to clean filters by 90% households in Yelaan and 100% in Sawaan to maintain the filtration rate. However, in Al-Dahabishah only 44.4% households use a brush of their own (sometimes, they use a metal brush, which damages the candle bar, see photo 3.1), 38.8% use the naked hand, while the rest use a sponge or a piece of cloth to clean filters. In Yelaan and Sawaan, no one used naked hands or a piece of cloth to clean filters. This might be referred to the effectiveness of awareness sessions about proper handling, cleaning and maintaining the filters in addition to the distribution of a brush and the importance of using it. Table 3.19: Cleaning frequency of filter, responsibility and type of cleaning tools used by households of 3 selected villages Village Cleaning water Sawaan filter Yelaan Silver filters Al-Dahabishah Total Candle filters % % % % 0 0 5.6 2.6 100 100 94.4 97.4 Weekly 90 50 27.7 50 Monthly 0 0 0 0 Irregular 10 50 72.2 50 10 0 11.1 7.8 Responsible Men Women Timing Cleaning tools Sponge 47 Clothe 0 0 5.6 2.6 By hand 0 0 38.8 18.4 Brush 90 100 44.4 71 It is observed (table 3.20) that 60% of households of each Yelaan and Sawaan and 50% of Al-Dahabishah, filtered water meets the demand to drinking water. Large family size in all villages might play an important role in the insufficient amount of filtered water, in addition to the low flow rate and relative low capacity of filters, especially of candle filters. In households with insufficient filtered water supply, family members still drink unfiltered water. Refilling the filters twice a day in 61% of households in Al-Dahabishah indicates the insufficient amount of filtered water, considering the small capacity of the CF bucket. In Yelaan, 50% of households refill filter when it is totally empty of water because of turbid water of source enforcing people to clean filters more often. In Sawaan, the majority of households (60%) refill filters when it is half empty. It must be noted that many households in Sawaan don't believe that the SFs kill bacteria efficiently, because they consider their water source clean; people in some households keep drinking unfiltered water when filters run out and containers are handled in an unhygienic way leading to their contamination. Several awareness sessions were therefore held to explain and clarify how to use the filter and containers properly. Table 3.20: Sufficiency of filtered water and frequency of re-filling filters in 3 selected villages Village Sufficiency and refilling of water filters Sawaan Yelaan Silver filters % Total Candle filters % 48 Al-Dahabishah % % Amount of filtered water sufficient 60 60 50 55.2 insufficient 40 40 50 44.7 When empty 30 50 16.6 28.9 Twice a day 10 20 61.1 36.8 When half empty 60 30 22.2 34.2 Re-filling the filter Despite the great advantages of filters, people in the villages complain about some disadvantages, which are summarized in table 3.21. Leaking of unfiltered water from the upper bucket contaminating filtered water of the lower bucket due to broken ceramic candle filter bars, tap leakage and low filter capacity (not sufficient for a family size of 5-10 members) are amongst the biggest problems faced in Yelaan and Al-Dahabishah. Fragile candles are difficult to maintain (clean) according to 33.3% respondents in Al-Dahabishah (photo 3.1). Additionally, people complain that candle filters keep filtered water warm in summer. Filtered water is therefore transferred into other containers (jerry cans) to cool water down, which may cause re-contamination with faecal coliform. In some cases clay is released from the SF when cleaned causing an unacceptable water taste. As mentioned earlier, the water source is more turbid in Yelaan, which affects flow rate; therefore, filters need to be more frequently cleaned in order to increase the amount of filtered water. Despite all disadvantages, a percentage of 40%, 20% and 5.5% of households in Sawaan, Yelaan and AlDahabishah, respectively don't face problems in handling filters. Table 3.21: Problems and defects of water filters faced by users in 3 selected villages Village Problems Sawaan 49 Yelaan Al-Dahabishah Silver filters Candle filters % % % Tap leaking 20 40 5.5 Fragile filter 10 0 33.3 Dissolving of clay (Silver Filter) 20 10 -- Low capacity 10 30 55.5 No problem 40 20 5.5 Photo 3.1: A broken ceramic candle filter unit bar The overall cost of the SF including both the plastic bucket and ceramic piece (pottery) was 3000 YR, while the pottery piece cost 1000YR in 2008. The willingness of households to buy a new SF or spares, if their filter is partly or totally damaged lies at about 81.8% of household in Yelaan and 64.3% in Sawaan, respectively, see table 3.22. This is a good inductor of willing to sustain the use of water filters either to improve their health or to show up as a prestigious status. The remaining households of 35.7% in Sawaan and 18% in Yelaan are not willing to buy spare parts. The reasons behind the unwillingness are due to financial shortage and for the unavailability of spare parts distribution shops. In addition, unwillingness could be a matter of weak awareness of households about the importance of drinking clean potable water to improve health. 50 Table 3.22: Willingness to buy spares of Silver Filter and reasons for unwillingness in Yelaan and Sawaan villages village Consideration Sawaan Yelaan % % Yes (positive) 64.3 81.8 No (negative) 35.7 18.1 Expensive 10 0 No money 80 100 No spare parts shop 20 75 Other reasons 10 0 Willingness Reasons of unwillingness 3.2.6 The Role of Women on Water Management Before implementing water projects, women and girls were responsible for collecting water, nevertheless, they were not aware of the importance of water quality. After implementing the water project and setting up of two Local Women Associations (LWAs) and two literacy classes in the villages, many awareness sessions were conducted within 6 months for men and women. The role of women was enhanced by raising their awareness on the importance of water quality, education (literacy class), operating IGA (economic) and training in good water management. Many women became able to read and write, knowledgeable in general health, water quality, filters use, and became confident in operating IGAs and water project management. Men also participated in awareness sessions, water testing and water project supervisions. After that, men understood the importance of women’s role in managing water quality, health and socioeconomic. Men also became familiar with importance of drinking water quality; they participate along with women in water projects management. This 51 improves equity in gender in villages as part of IWRM to improve health and socioeconomic households which will improve the quality of life (CARE, June2008)& (www.reflectaction.org) (Bulletin-52, 2008). Photo 3.2: Training women on water testing in the village Photo 3.3: Training men on water testing in the villages 52 3.2.7 Water Quality Impact 3.2.7.1 Physico-Chemical Water Quality Parameters Analysis All tested water samples in the villages were colorless and odorless according to WHO and Yemeni drinking water quality guidelines, refer to annex- c. The turbidity of all water samples was less than 5 NTU and therefore in the acceptable range of WHO and Yemeni drinking water quality standards except the water source of Yelaan, which showed a value of 16 to 17 NTU for the reason of being uncovered so that water flows through soil and rocks and one household sample in Yelaan with a value of 9 NTU. Almost all tested water samples show pH values ranging between 6.5 and 8.5 indicating an acceptable range according to Yemen and WHO drinking water quality standards. One exception was observed at a household of Yelaan ( pH=9 before filtration), which might be referred to the contamination of water or container (jerry can)used for water collection. Higher pH values can change the taste of drinking water, giving it a soapy feel. 3.2.7.2 Microbiological Water Quality Parameters Analysis A. Yelaan As mentioned earlier, all tested water samples for Bacteria (faecal coliform) showed high contamination 100% with faecal coliform (E. coli) before implementing the water project (first test). However, filtered water of Yelaan in field and in laboratory was almost free of faecal coliforms (E. coli ), after water filters used in 1, 3 and 6 months (100%, 53% and 90%) from filtered water samples were clean from E. coli. The absence of E. coli in filtered water indicates the effectiveness of the SF in killing E. coli and the improvement of water quality, in addition to effective awareness campaigns. However, after 3 months of filter use results showed some households (drinking water) have contamination with low risk during field and lab analysis. This contamination might be referred to improper handling of filtered water, or improper cleaning of water filters and store filtered water in contamination jerry 53 cans. A bacterial count of 0 = conformity clean, 1-10 indicates a low health risk, 11-100 indicates a medium risk, 101-1000 = high risk and a count over 1000 is of very high risk according to WHO guidelines for safe drinking water. It is to be considered that samples results in lab test (CNPHL) with values less than 2 are not contaminated = 0 (NCPHL as reference), see table 3.23 and Annex B. Test Table 3.23: Microbiological water analysis for faecal coliforms in Yelaan Test 1 Test 2 Test 3 Test 4 Before silver water filters use after 1 month of filters use after 3 months of filters use after 6 months of filters use No. sample sample No. Bacteria sample No. Bacteria sample No. Bacteria Bacteria% Lab test Field test Bacteria S1 TNTC B1 TNTC A1 0 ST1 TNTC B2 TNTC B2 TNTC A2 0 S2 96 B3 TNTC B3 67 A3 0 A3 1 B4 TNTC B4 35 A4 0 A4 0 B5 1 A5 0 A5 5 A5 0 B6 1 A6 0 A6 1 A6 0 B7 50 A7 0 A7 1 A7 0 B8 60 A8 0 A8 9 AC 8 0 B9 38 - - AC9 TNTC - - B10 6 A9 0 A10 0 A9 0 B11 4 A10 0 A11 0 A10 0 B12 12 A11 0 A12 0 A11 0 B13 9 A12 0 A13 17 A12 0 S14 13 - - - - - - Clean% 0% 100% 53% 90% Contami nation% 100% 0% 47% 10% 54 No = number, S = water source, ST= water storage, B and A are household samples Before and After filtration. AC= household sample taken from storage container (jerry cans) after filtration. TNTC= too numerous to count. In Lab test bacteria < 2 states the absence of bacteria=0. Photo 3.4: Discussion on biological water testing results in Yelaan and Sawaan B. Sawaan Water testing in the field and NCPHL before the use of water filters (test 1) showed that 83% of samples were contaminated with Bacteria (E. coli). Table 3.24 shows that before implementing the water project the water source in Sawaan (S1) and one household sample were not contaminated with faecal coliform (17% clean), while tested in the field. This indicates a better water quality in Sawaan water source over the water sources of Yelaan and Al-Dahabishah as in Sawaan water drips out of two rocks and is collected in a small basin. It also shows clearly that some households handle water properly during fetching or storage in jerry cans as data show no contamination before filtration. However, water samples taken from constructed water storage and households showed contamination before filtration. After use water filters, after one month most filtered water samples were free of E. coli, (test 2 55 about 7 out of 8 samples 88% clean. After 3 months (test 3) about 8 out of 9 samples 89% clean and after 6 months (test 4) about 7 out of 11 samples 64% clean. The rest tested samples were contaminated. Contamination samples might be referred either to improper water transfer, mostly contaminated storage containers (jerry cans) used for water cooling, or due to improper cleaning of water filters. Bacteria% Lab test Field test Test Table 3.24: Microbiological Analysis of faecal coliforms on water samples for Sawaan village Test 1 Test 2 Test 3 Test 4 before silver water filters use after 1 month of filters use after 3 months of filters use after 6 months of filters use sample No. Bacteria sample No. Bacteria sample No. Bacteria sample No. Bacteria S1 0 B1 0 ST1 4 ST1 9 B2 11 B2 23 A2 1 A2 0 B3 60 B3 18 A3 0 A3 0 B4 0 B4 6 A4 0 A4 0 B5 4 A5 0 A5 0 A5 1 B6 1 A6 0 A6 0 AC6 31 B7 1 A7 0 - - AC7 15 - - A8 0 - - AC8 9 B8 11 A9 0 A7 0 A9 0 B9 6 A10 0 A8 0 A10 0 B 10 14 A11 0 A9 0 A11 0 B 11 27 A12 4 A10 0 A12 0 B 12 17 - - - - - - Clean% 17% 88% 89% 64% Contami nation% 83% 12% 11% 36% 56 No = number, S = water source, ST= water storage, B and A are household samples Before and After filtration, respectively. AC = household sample taken from storage container (jerry cans) after filtration. TNTC= too numerous to count. In Lab test bacteria < 2 states the absence of bacteria= 0. C. Al-Dahabishah Table 3.25. Show that all samples taken from the water source, water net system and some households before filter distribution were 100% ( low risk) with faecal coliform indicating poor water quality. It is worth mentioning that contamination of the water source (open manual water well) and water net was very low risk and creates a major question; from where does contamination in households come. The most probable answer could be that containers used to transfer water from the water net to households were highly contaminated and not well cleaned. After the use of water filters, the results showed that 9 out of 15 samples (60%) were clean or free of Bacteria (E. coli). However, 40% of households showed contamination with faecal coliforms representing a relative higher percentage than others villages. The reasons for contamination could be due to the improper way of cleaning filters (more difficult to clean candle filters) and the use of contaminated jerry cans for storing and cooling filtered water. In addition, results indicated that awareness among households was not sufficient to improve handling of water properly, storage of drinking water and cleaning water filters properly. It was noted that candle filters were not provided with cleaning procedures and cleaning brush. 57 Table 3.25: Microbiological analysis of faecal coliforms on water samples of Al-Dahabishah village Field test Test Bacteria% Before Candle filters use After 6 months of Candle filters use Sample No. Bacteria Sample No. Bacteria S1 1 AC1 4 B2 26 A2 5 B3 11 A3 2 B4 30 A4 5 B5 16 AC5 70 B6 7 A6 2 B7 6 A7 0 B8 14 A8 0 B9 TNTC A9 0 WN10 2 A10 0 - - A11 0 - - A12 0 - - A13 0 - - A14 0 - - A15 0 Clean% 0% 60% Contamination% 100% 40% No = number, S = water source, WN = water net, B and A are household samples Before and After filtration. AC = household sample taken from storage container (jerry cans) after filtration. TNTC = too numerous to count. 58 Photo 3.5: Discussion on biological water testing results in Al-Dahabishah village 3.3 Comparing Silver Filters with Candle Filters The health and socio-economic impact study for both filter types might give us an indication of which filter is more suitable to rural Yemeni society through comparing Silver filters (SFs) with Candle filters (CFs) in terms of killing bacteria, capacity, easiness of cleaning, fragility, price and affordability, refer to table 3.26. It showed that SFs is more effective in killing bacteria than CFs in the villages. Table of the questionnaires showed another advantage of the SF,(capacity is larger than CF). According to the survey, CF has to be filled more often than the SF. In other words, sufficiency of filtered water per a medium sized family was insufficient, which might again lead to drinking unclean water. It must be mentioned that other factors play an important role in filtered water sufficiency as the climate, family size, and turbidity of water source. In Al-Dhabishah, climate is warm, and family size is larger than other villages, therefore, more drinking water is needed. Considering the above, more than a filter or a larger filter size (plastic bucket) is required. It is much easier to clean SF 59 than CF since the ceramic bucket consists of one piece only. The pottery can easily be taken out of the plastic bucket, though it is much heavier than the CF bars. However, CF candle bar has to be taken off and affixed again for cleaning purpose. Therefore, such bar can easily be damaged and may allow contaminated water to flow without filtration, thus keeping drinking water contaminated. The proper use and cleaning of water filters therefore play a major role in water treatment and accordingly, improving the health. The shape and thickness of the SF enhances filter stability, contrary to the CF, which is more fragile as candle bar. The study showed that CFs are more often broken than SFs. It is to be noted that SFs keep water cool better than CFs; having said that, SFs would therefore be very suitable for warm climates as in Al-Dahabishah. The CFs and SFs were distributed for free to every household in the villages. A new CF is cheaper it cost about 7001000 YR, including plastic bucket and the ceramic bar, while SF cost about 2800-3000YR, including plastic bucket and the ceramic piece (pottery). The pottery only cost 1000YR (in 2008), which makes the CF more affordable for low income population in the villages (most people are self-employed in agriculture, and similarly, people in Al-Dahabishah are poorer than other villages). Table 3.26: Comparing Silver Filters with Candle Filters Village Sawaan Yelaan AlDahabishah Filter type SF SF CF Ease of Fragility cleaning Very good Easy Fragile Very good Easy Fragile Less Very Good Insufficient easy fragile * Size of medium family from field survey = 5-10 members. Kills bacteria Capacity for medium family* Sufficient Partially sufficient Price Acceptable Acceptable More acceptable (cheaper) 3.4 Sustainability of Water Projects Projects sustainability means the continuity of water projects and its related improvement within IWRM. This can be done by good governance of IGAs in terms of maintaining water systems (water sources, water storages and pipelines) by the management staff (women). 60 Such sustainability will lead to a continuous improvement in water quantity, quality, health (reduce water borne diseases), save time, money, women education, awareness, and improve socioeconomic of households accordingly. LWAs are lead by empowered women, who are able to use and manage the income generating revenue to sustain the projects. The said revenue covers maintenance of the water net system, electric generator, water pump and finally management and sustainability of IGAs and literacy classes. According to projects sustainability objectives, projects succeeded and sustained during the period of study with IRM. However, after more than a year from implementing the water projects and according to my own observation, project sustainability faced many challenges. IGA in Yelaan and Sawaan, in addition to, literacy classes in all villages were stopped. The reasons are mostly due to mismanagement and conflicts between householders for the selection of the management staff. Additionally, no monitoring or supervision was performed by the government or any other related institution. Furthermore, there is a lack of awareness on the importance of good water governance by inhabitants, besides that staff have weak management skill, particularly among women, and the lack of conduct to monitor and evaluate such projects. In general, after implementing water projects, both water quality and quantity have improved through construction of water storages, water pipelines, providing water filters to every household and constructed drainage basin to collect disposal water. The water project components were adequately implemented with IWRM, so such components require minimum maintenance only. The study shows a relatively high willingness of households to buy new filters or spare parts in case of any damage ensuring sustainability. 61 4 Conclusions and Recommendations 4.1 Conclusions - After implementing water projects in all villages, the water quantity became double in water storages. - The water quality has improved as a result of using water filters and access to clean drinking water became possible for all households in the villages (equity). - Diarrhoeal diseases (faecal coliform) have highly reduced, which approved effectiveness of filters. - Some drinking water contamination was still observed on household level due to inappropriate way of cleaning and using filters, also storing filtered water in jerry can causing recontamination. - Silver filters (SFs) showed more efficiency over candle filters considering the easiness of handling SFs. - The socioeconomic of population has improved as treatment expenses reduced. - Time for water collection has been reduced. As a result, women and girls are save time and able to join schools and literacy classes. - The population became aware about the impact of water quality on health and consequently the socioeconomic of households. - Water became valuable (have price) in Al-Dahabishah and Sawaan). However, water is still free of charge in Yelaan. - The water projects have created permanent or part time jobs, such as worker in pottery manufacture in Sana’a, literacy classes teachers, income generating activities (IGAs) operators and selling points of filters. 62 - Women managing IGAs and use their revenues to operate IGAs, literacy classes, maintain water systems in order to sustain water projects. Men understand the important role played by women in water management. - The government does not intervene in rural water projects in the studied areas. CARE International Organization in Yemen (CARE), Social Fund for Development and GTZ are the only entities with direct interventions. - Sustainability is only partly given. The willingness of buying spare parts for filters was observed. Mismanagement of income generating activities (IGAs), which might be due to the lack of management skills among women, which lead to the closure of the IGAs. It is to be noted that, the social (marriage of female teacher) lead to the closure of the literacy class after the movement of the female teacher to another village. - The concept of integrated water resource management (IWRM) has been partly implemented due to lack of legal and institutional frameworks. 4.2 Recommendations - More research is recommended in future for implementing integrated water resource management in water projects for more improvement in water management. - The sustainability of projects in general should be addressed, taken into consideration integrated water resource management (IWRM) aspects. - It is highly recommended to use Sliver Filters in rural and urban areas where water contamination is still wide spread. - The cost of filters should be kept at low level to keep the accessibility to clean drinking water for poor people. - In hot climatic zones, plastic filter buckets are not suitable, as such, it is recommended to use especial material to keep water cool. 63 - Water storages need regular cleaning to reduce contamination and water sources should be kept covered. - Collecting disposal (waste water) in drainage basins close to water storages is recommended to expand agricultural area, which will improve family’s income. - Rooftop rainwater harvesting might be a technique to be introduced in the rural areas. - Awareness sessions should carry out periodically to ensure effective water management. - Men and women should be provided with specific skills, in particular, operational and financial management for better water management. - The sustainability of water projects should be of first priority in the designing process of projects. - The participatory approach in the whole project cycle should be strengthened to ensure success of the project. - Cooperation and communication between relevant government institutions such as the water and health sectors, non- government organizations (NGOs) and households in the villages is recommended to address some water problems, improve and sustain water projects. References 1. Al-Nasiri B. (2010). Health and Socioeconomic Impacts of Silver Impregnated Ceramic Filters in Four Villages in Amran Governorate. M.S.C Thesis, Water and Environment Centre, Sana'a University. 2. A. K. Biswas. (June 2004). Integrated Water Resources Management: A Reassessment A Water Forum Contribution. International Water Resources Association,Water International, Volume 29, Pages 248–256. Atizapan, Mexico. 3. Beydoun, Z. R. and Others. (1998).International Lexicon of Stratigraphy, Volume 3.Ministory of Oil and Minerals. Sana’a Republic of Yemen. 64 4. CARE, (April, 2008).Construction of Drinking Water Supply System and Poultry Production Unit in Yelaan and Sawaan, Al Mahweet governorate, Yemen. (Final Report). 5. CARE, (July 2008). Rural Women’s Empowerment Project Al-Mahweet. CARE International Yemen, Final report. 6. CARE, (June 2008), Introduction of Silver Colloidal Water Filters in Yelaan and Sawaan Al Taweelah, Al-Mahweet.(Final Report). 7. CARE, (March 2006). Water Quality, Testing, Results, Treatment, Training &Users manual. University of Surrey. U. K. 8. CARE, (September 2007). Water Quality Testing Training Manual for Women. 9. CARE,(June 24,2007). More Water and Improved Income for Yelaan – Sawaan village and Its Local Women’s Association, Yemen. Report. 10. CARE,( 06-2007),Yelaan and Sawaan proposal without budget,(Draft Report). 11. Central Statistical Organization (CSO). 2004. Census of Al-Mahweet governorate. 12. Central Statistical Organization (CSO). 2008. Census of Al-Mahweet governorate, Yemen. 13. Clasen, T; Parra, G ; Boisson, S, and Collin, S.(2005). Household –based Ceramic Water Filters for The prevention of Diarrhoea: A randomized, Controlled Trial of A pilot Program in Colombia. Journal article (The American Society of Tropical Medicine and Hygiene) pag16. 14. Drinking Water Inspectorate.(January, 2010). Drinking Water Inspectorate , Ergon House, Horseferry, Rd, London, SW1p 2AL. London. 15. El-Anbaawy, M. I.(1985).Geology of Yemen Arab Republic, University of Sana’a. 16. German Agency for Technical Cooperation GTZ. Pure Drinking Water Pilot Program Concept Paper. Sana’a, Yemen. (Draft Report, 2007-2008). 17. Gender equality in Al Mahweet. Article Yemen Times. September 2007 (in English). 18. http://web. mit.edu/watsan/Docs/Student Theses/Nepal/Dies2003.pdf. 19. http://www.eihms.surrey.ac.uk/robens/env/rcpeh.htm. 20. http://www. Ar.Wikipedia.org. 65 21. http://www. Potpaz. org/pfpfilters.htm. 22. Joe Brown, Mark D. Sobsey, and Dana Loomis.(2008). Local Drinking Water Filters Reduce Diarrheal Disease in Cambodia: A randomized, Controlled Trial of the Ceramic Water Purifier. Journal articale (The American Society of Tropical Medicine and Hygeiene). 79(3). pp. 394-400. 23. Lantagne, D. S. (2001). Investigation of the Potters for Peace Colloidal Silver Impregnated Ceramic Filter. Intrinsic Effectiveness and Field performance in Rural Nicaragua. 24. Martella du Preez, Ronan M. Conroy, James A. Wright, Sibonginkosi Moyo, Natasha Potgieter, and Stephen W. Gundry.(2008). Short Report: Use of Ceramic Water Filtration in the Prevention of Diarrheal Disease: A Randomized Controlled Trial in Rural South Africa and Zimbabwe. Journal article (The American Society of Tropical Medicine and Hygiene).pp 696-701. 25. Mattelet, C.(2006) . Household Ceramic Water Filter Evaluation using Three Simple Low cost Methods. Membrane Filtration, 3M Petrifilm and Hydrogen Sulfide Bacteria in Northern Region of Ghana. Master of Bioengineering . 26. Metcalf, S. a., & Fujioka, R. a. (1999; 2003). 27. Nagi. M. M.,(2010). The Impact of Al-Azraqin Landfill on the Quality of the Surrounding Groundwater within Integrated Water Resources Management Perspective. M.S.C Thesis, Water and Environment Centre, Sana'a University. 28. NWSSIP (2005-2009), National Water Sector Strategy and Investment Program, Republic of Yemen, Ministry of Water and Environment, 2004. 29. NWSIP. (2008).Update of The National Water Sector Strategy and Investment Programme. Sana’a. 30. OXFAM-Delagua (2004), Portable Water Testing Kit User Manual, Version 4.1. University of Surrey.U.K. 31. Potter for Peace (PFP) 2004, Ceramic Water Filter Project. 32. The American Society of Tropical Medicine and Hygiene. pp. 394-400. 66 33. The presentation of the Expert Group Meeting on the Application of Indicators and the Indices for Water Quality Management in the ESCWA Region in (2006-2007), Sana'a, Yemen (Unpublished Data). 34. World Health Organization and United Nations Children's Fund. (WHO and UNICEF). 2010. Global water Supply and Sanitation Assessment 2000, pag 7 Report. pdf. 35. World Health Organization (WHO).2004.Guidelines for Drinking Ware Quality third edition volume 1. Geneva. 36. World Health Organization (WHO). 2005. 37. World Health Organization (WHO). 2010. 38. www. irc. May 2008. Making Water Quality Visible for Women as well as for Men. source Bulletin 52. 39. www. reflect-action.org. 40. WWW. Heart spring. net "A Guide to Water Filters and Water Treatment, 2008. 41. www. swrcb. ca. govwater_issues programs swampdocscwt guidance3159.pdf 42. YSMO. (1999).Yemen Standardization Metrology & Quality Control Organization. 43. www. A Brief History of The Health Support Uses of Silver.mht. 44. www. A Guide to Water Filters. 45. www. Silver Colloids Colloidal Silver Product Reports.mht 46. www. rcph.com. 67