•PHILIPPINE NATIONAL
•STANDARD FOR
DRINKING
•WATER
•A.O. 20170010
•Philippine National Standards for Drinking
•Water (PNSDW)
1963 - WHO International Standards 1958 n
1978 - Sanitation of the Philippines (PD 856),
1975 n 1993 - WHO Guidelines (2nd Ed.) 1993 n
2007 - Concrete evidence of the DOH commitment
• to achieve the MDG for water and sanitation n
2017 - July 2017, official launching Dec. 12, 2017
•n
•1
•PNSDW of 2017
Launching
•Reasons for revision of 2007
PNSDW
•
•
experiences of water service providers
WHO Guidelines for Drinking-Water Quality 4th edition,
2011
•- new parameters
•- improved framework of drinking-water safety for water
quality monitoring, testing and analysis
•2
•Reasons for revision of 2007
PNSDW
o DOH AO 2014-0027, Water Safety Plan for all
drinking-water service providers
o Sustainable Development Goals (SDG) water
supply indicators
o standards of drinking-water quality during
emergency
•Scope and
coverage
o Drinking water service providers
•
Government and private developer and operators
•
Bulk water, refilling station, vending machine operators
Ice manufacturers
o Food establishments
o Residential, commercial, industrial and institutional buildings
o Water testing laboratories
o General public
•3
•General
Guidelines
• 1. Standards for drinking-water shall conform under this AO and
its Manual of operation
•
2. Improved framework comprising of 3 key
components
Health-based targets
• Safely managed water systems
• A system of independent surveillance
•1 STANDARDS FOR DRINKING WATER
QUALITY
A. Clear, free from objectionable taste, odor and color
B. Compliance to the standard values
• Microbiological, Physical and
Chemical, Radiological
A. Parameters shall be classified as
•
Mandatory
Primary
• secondary
•4
•2 STANDARDS FOR WATER SAMPLING & EXAMINATION
•9
A. Initial and periodic examination (Micro, Phychem
& Radiological)
B. Minimum number of samples are based from source
and mode of distribution
C. The collection of water samples shall comply with
the standard sampling requirements. (annex D)
•2 STANDARDS FOR WATER SAMPLING & EXAMINATION
•1 0
A. “ONLY CERTIFIED SAMPLING PERSONNEL
SHALL COLLECT Water samples for regulatory
purposes”
B. examined only in DOH ACCREDITED LABORATORY
and methods based on 22 edition of SMEWW.
C. Radiological quality shall be conducted only by PNRI.
•5
•3 STANDARDS FOR OTHER MODE OF DISTRIBUTION
•1 1
A. Initial and periodic examination for refilling stations,
vending machines, mobile tanks and bulk water supply and
must meet sampling frequency (Annex C)
B. standard values for mandatory parameters shall
be applied except for
 pH = 5-7
 TDS not exceed 10 mg/L
•3 STANDARDS FOR OTHER MODE OF DISTRIBUTION
•1 2
•C.
Mobile tanks :
 Cl2 residual : at least 0.5 mg/L but does not
exceed 1.50 mg/L at the point of delivery
•D.
Bulk water
 Cl2 residual : at least 0.3 mg/L but not exceed
1.50 mg/L
 Chlorine dioxide residual : 0.2 to 0.4 mg/L prior
to distribution
•6
•Standard values and methods (Microbiological)
•1 3
•Standard values and methods (Microbiological)
•14
•PNSDW Table A.1
•7
•Standard values and methods (Inorganic chemical)
•15
•PNSDW Table A.2
•Standard values and methods (Organic chemical)
•16
•PNSDW Table A.3
•8
•Standard values and methods (Radiological)
•17
•PNSDW Table A.7
•Standards values (Changes)
•1 8
•n
Color : True Color (5 CU) -*
-*
•n
n
600mg/L
n
Apparent Color (10 CU)
Cyanide: 0.07 mg/L -*
n
TDS : 500 mg/L
0.5 mg/L
Fluoride: 1.0 mg/L -* 1.5 mg/L
Selenium: 0.01 mg/L -* 0.04 mg/L
•9
•Standards values
(Changes)
•1 9
•n
Manganese: from the Acceptability aspect list to Inorganic
•
n
Organic Chemical : deleted the Edetic Acid,
Nitrilotriacetic acid, 1,1 dichloroethene and
Trichloroethene
n Pesticides : add Glyphosate and deleted 2,4
Dichlorophenoxyacetric acid, Heptachlor and Heptachlor
epoxide, MCPA and Pentachloropehnol
•
•Standards values
(Changes)
•2 0
•n
Radiological Parameters:
•n Gross alpha : 0.5 Bq/L from 0.1 (2007)
•n Gross Beta : 1.0 Bq/L
•n and Radon : 11 Bq/L
•n Additional Parameters
•10
•4 EVALUATION OF REPORTS
•2 1
•A.
Expression of Results
• Microbiological : number/presence of Total
Coliform, E. coli/Thermotolerant Coliform and
Heterotrophic Bacteria in 100 mL of water
•4 EVALUATION OF REPORTS
•2 2
•11
•4 EVALUATION OF REPORTS
•2 3
•A.
Expression of Results
• Physical, Chemical and Radiological: for not
detected report as “Less than the MDL”. For trace
analysis - MDL and LOQ
•4 EVALUATION OF REPORTS
•2 4
•12
•4 EVALUATION OF REPORTS
•2 5
Interpretation of Results
• Drinking water service providers shall consult
the DOH or LDWQMC
• E.coli/Thermotolerant Coliform is present,
Sanitary survey and re sampling w/in 24 hrs,
•If still positive – corrective action, inform consumer
boil water or provide alternative drinking water
•B.
•4 EVALUATION OF REPORTS
•2 6
•B.
Interpretation of results
• Exceedance of standards values in physical
and chemical – monitoring for 3 consecutive
months, further study to determine cause of
contamination
•13
•5CLASSIFICATION OF DRINKING WATER QUALITY PARAMETERS
•2 7
a. Mandatory Parameters
b. Primary Parameters
c. Secondary Parameters
d. Emergency Drinking-Water Parameters
e. Sustainable Development Goal (SDG) Parameters
•2 8
•A. Mandatory
Parameters
o required for examination by all
drinking water service providers
o legally enforceable parameters
o directly affect health through acute
or chronic exposure
o indicate the possible presence of
other contaminants
o exceed tolerable values on local
monitoring data of the previous years
1. Thermotoler
ant Coliform/E.
Coli
2. Arsenic
3. Cadmium
4. Lead
5. Nitrate
6.
1. Color
Turbidity
2. pH
3. Total Dissolved
Solids
4. Disinfectant
Residual
•14
•B. Primary
Parameters
•2 9
•
site-specific parameters that directly affect
health through acute or chronic exposure
•Ex. Nickel, Nickel Mining
•
•3 0
parameters that can be adopted as enforceable by
the Local Drinking-Water Quality
•Primary
Parameters
•15
•Primary
Parameters
•3 1
•N o .
•4 1
•N o .
•Parameter
•Lindane
•4 7
•Parameter
•N o .
•Parameter
•Pendimethalin
•5 3
•Trichloroacetate
•Sulfate
•5 5
•Total Trihalomethane
•42 Manganese 48 Radon 54 Toluene
•4 3
•Mercury (Total)
•4 9
(THM)
•44 Monochloroacetate 50 Selenium 56 Vinyl chloride
•4 5
•Nickel
•5 1
•Styrene
•46 Nitrite 52 Tetrachloroethene
•C. Secondary
Parameters
•3 2
•
parameters that will render the water unacceptable for
drinking include operational parameters which affect the
efficiency of treatment processes
•16
•D. Emergency Drinking-Water Parameters
•3 3
LGU shall provide temporary drinking water supply for
72 hours
• n Water should be disinfected through boiling or
chlorination
• n Monitor Residual Cl2 (0.5-1.5) and E. coli/ThC n Regular
monitoring shall resume after normal condition has been
established
•
•E. SDG
Parameters
•3 4
•
n
n
Relative to target of SDG in achieving universal and equitable
access to safe and affordable drinking water for all by 2030,
the population should be using safely managed drinking water
services
•
n
this entails that the population uses a drinking water source
which is located on premises, available when needed, and
free from fecal and priority chemical parameter.
•17
•6 QA/QC FOR WATER LABORATORIES
•3 5
•n
Only laboratories accredited by DOH will perform analysis n
Laboratories required to have an effective Quality System
•
Laboratory Personnel involved in water sampling shall be
certified by the DOH
n
•
•3 6
•n
7 WATER SAFETY PLAN AND
DRINKING WATER QUALITY
SURVEILLANCE
WSP a must for all drinking water service providers
•n
WSP reviewed and approved by DOH
•n
WSP developed to meet health based target consistent
•with PNSDW
•n
Audit by drinking water quality surveillance agency
•18
•Frequency of Water sampling for Microbiological
•3 7
•Frequency of Water sampling for Microbiological
•3 8
•19
•Frequency of Water sampling for Microbiological
•3 9
•Frequency of Water sampling for Phychem
•4 0
•20
•Frequency of Water sampling for Radiological
•4 1
•Frequency of Water sampling for other modes of distribution
•4 2
•21
•Sampling Requirements
•4 3
•Sampling Requirements
•4 4
•2 2
•Sampling Requirements
•4 5
•Sampling Requirements
•4 6
•23
•4 7
•Questions??
?
•2 4