Uploaded by gaziarafatnafiz

River & Groundwater Pollution in Bangladesh: Project Report

advertisement
River Pollution and Ground Water Pollution: What Has Gone Wrong?
ENV107 Final Group Project
Section: 33
Submitted to
Mahfuzur Rahman Khan (MRKn)
Lecturer
Department of Environmental Science and Management
North South University
Submitted by
Name
ID
Gazi Arafat Nafiz
2322930030
Gazi Tanzeem Hayat Rasha
2323950625
Jiba Afia Islam
2311770615
Md. Arshad Almas Shawki
2122400630
Anika Qader Mohema
1931195030
Introduction
Bangladesh, a country with verdant plains and a web of magnificent rivers, is in grave danger due
to the stealth pollution of its limited water supplies (Rahman et al., 2019). This problem goes
beyond environmental issues; it endangers public health, financial stability, and the foundation
of Bangladeshi society. Groundwater and river pollution present complex issues with wideranging effects on the country's natural balance and 170 million people's quality of life (World
Bank, 2023). An in-depth analysis of the problem's underlying causes, terrible effects, and
possible avenues for long-term resolution is provided in this investigation.
Background
Bangladesh's waterways, like the Buriganga, Turag, and Shitalakhya, are heavily polluted due to
industrial activities, especially in the garment and tannery sectors. This leads to increased
discharge of untreated waste with harmful substances like chromium and ammonia (Azad et al.,
2020). Urban expansion worsens the problem, with sewage systems directly depositing waste
into rivers (Department of Environment, Bangladesh, 2021). Intensified agriculture further adds
to pollution through excessive pesticide and fertilizer use, exacerbated by natural arsenic in some
aquifers, posing long-term health risks (British et al., 2023). Bangladesh faces a crisis with its vital
resources in jeopardy.
Issues and Challenges
An intricate web of interrelated factors contaminates Bangladesh's rivers and groundwater.
Industrial Discharges: The exponential growth of industries, particularly in textiles and leather
tanning, has led to the unfettered release of untreated effluents. These effluents frequently
contain dangerous substances, including ammonia, lead, and chromium, making the water
unsuitable for aquatic life and even for some household purposes.
Untreated Sewage: The growing urban population causes untreated sewage to overflow into
rivers, reducing oxygen levels (BOD), harming aquatic life, and fostering harmful pathogens
(Department of Environment, Bangladesh, 2021).
Agricultural Runoff: Using chemical fertilizers and pesticides in agricultural practices has resulted
in substantial runoff. These harmful substances pollute rivers and seep into shallow aquifers,
endangering surface water quality and groundwater. (Islam et al., 2015).
Inadequate Regulations and Enforcement: The lack of strong environmental laws and their
enforcement results in businesses and individuals ignoring measures to control pollution, thus
exacerbating the issue. (World Bank, 2023).
Limited public awareness: Limited public awareness about pollution's harmful effects hinders
efforts to promote sustainable water use and responsible environmental behaviors.
Environmental Degradation Due to River Pollution
Environmental degradation caused by the pollution of rivers and groundwater can have a range
of adverse effects on ecosystems, biodiversity, and human health. This can include the
contamination of water sources, the destruction of habitats, and the endangerment of species.
•
•
Loss of Biodiversity: Contaminated water harms aquatic ecosystems, leading to
biodiversity loss. Pollutants like heavy metals and pesticides endanger aquatic plants and
animals, reducing species abundance and diversity (Macedo-Sousa et al., 2020).
Eutrophication: Agricultural runoff and untreated sewage can cause eutrophication,
where water bodies become overloaded with nutrients like nitrogen and phosphorus. This
leads to algal blooms, oxygen depletion, and fish die-offs, disrupting aquatic ecosystems
(Rahman et al., 2019).
•
•
•
Habitat Destruction: Pollution damages river and groundwater habitats, rendering them
unsuitable for many species. Deforestation and improper land use cause erosion,
sedimentation, and loss of breeding and feeding areas for fish and other organisms (World
Bank, 2023).
Water Contamination: River and groundwater pollution poses health risks from ingesting
contaminated water, especially from pathogens in untreated sewage, leading to
waterborne diseases like cholera and typhoid, impacting communities reliant on these
sources (Macedo-Sousa et al., 2020).
Disruption of Ecosystem Services: Healthy river and groundwater systems offer crucial
ecosystem services like water purification and flood regulation. Pollution increases water
treatment expenses and flood hazards and lowers agricultural productivity (Rahman et al.,
2019).
How Bangladesh is Dealing with This Issue
Bangladesh has taken comprehensive actions against river pollution, including strict regulations,
improved wastewater treatment, public awareness campaigns, and community clean-up efforts.
Policy adjustments, technological solutions, and eco-friendly agricultural practices are also being
pursued. Despite challenges, the country remains committed to sustainable water management.
Possible Solutions
Some possible solutions for river pollution in Bangladesh could include:
•
•
•
Enhancing the enforcement of current environmental regulations to stop industrial
practices of discharging untreated waste into rivers.
Investing in improving the infrastructure for treating wastewater to ensure the effective
treatment of industrial and municipal sewage before its release into water bodies.
Raising awareness about the harm of littering and improper dumping in rivers encourages
responsible behavior and helps keep rivers clean and pollution-free.
•
•
•
•
•
To discourage illegal dumping and promote adherence to environmental regulations,
enforcing more severe penalties for individuals or organizations caught polluting rivers is
essential.
Encouraging sustainable agricultural practices to reduce pesticide and fertilizer runoff into
rivers.
Collaborating with neighboring countries on transboundary river management initiatives
to address pollution that originates upstream.
Supporting research and innovation in eco-friendly waste management and pollution
control technologies.
Empowering local communities to participate in river conservation through communitybased initiatives and partnerships with NGOs and civil society organizations.
Limitations
•
•
•
•
•
•
Health Risks: River and groundwater pollution poses a significant public health threat due
to contaminants like heavy metals, arsenic, and pathogens, leading to waterborne
diseases, especially risky for children and marginalized communities.
Access to Safe Drinking Water: River and groundwater pollution limit access to safe
drinking water, exacerbating poverty and inequality, especially for marginalized
communities lacking access to clean water, widening the resource gap.
Environmental Degradation: Pollution from industrial waste, agriculture, and sewage
harms rivers and groundwater, damaging ecosystems, biodiversity, and soil. It causes fish
kills, habitat loss, and wetland degradation. This threatens the environment's health and
balance, requiring urgent action.
Impact on Agriculture: Groundwater pollution harms agriculture by causing crop failure,
lower yields, and soil damage. Contaminants like heavy metals and pesticides can
accumulate in crops, risking human health when consumed.
Economic Costs: River and groundwater pollution result in healthcare expenses, reduced
productivity, and damage to agriculture and fisheries, impacting individuals, communities,
and governments, affecting both quality of life and financial well-being.
Arsenic Contamination: Bangladesh faces a critical problem of arsenic contamination in
groundwater, affecting millions. Drinking arsenic-laden water leads to serious health
issues like skin problems, cancer, and heart diseases, posing a significant public health
threat.
Solving river and groundwater pollution in Bangladesh requires strict regulations, sustainable
water management, improved wastewater treatment, and awareness campaigns.
Discussion
River and groundwater pollution is a pressing issue in Bangladesh, impacting public health, the
environment, and the economy. Factors like industrial operations, farming, and urbanization
contribute to this problem. Arsenic contamination in groundwater poses health risks, while
industrial waste and agricultural runoff pollute rivers. This pollution leads to waterborne diseases
and affects agriculture and fisheries, exacerbating poverty and inequality. Addressing these issues
requires strict regulations, improved wastewater treatment, sustainable agriculture, awareness
campaigns, and sustainable development efforts to ensure access to clean water and protect
public health.
Conclusion
Addressing river water and groundwater pollution requires a multi-faceted approach that involves
government intervention, community awareness, and individual responsibility. Government
intervention can include implementing and enforcing regulations to limit industrial and
agricultural pollution and investing in water treatment and conservation infrastructure.
Community awareness efforts can involve educational programs, public outreach, and
community engagement to encourage responsible water usage and pollution prevention.
Individual responsibility plays a crucial role in reducing pollution sources through actions such as
proper disposal of household waste, minimizing the use of harmful chemicals, and conserving
water. By working together to reduce pollution sources and promote sustainable water
management practices, we can safeguard our water resources for future generations.
References
• Rahman, M. M., Rakib, M. A., & Ahmed, A. T. (2019). Water pollution and its impact on
•
•
•
•
•
•
•
•
•
•
public health in Bangladesh. Heliyon, 5(12), e02977. [This citation is referencing the
impact of water pollution on public health in Bangladesh]
Azad, S. A., Islam, M. M., & Rahman, M. S. (2020). Water quality assessment and
pollution sources of the Buriganga River, Bangladesh. Environmental Pollution, 263,
114610. [This citation is referencing the sources of pollution in the Burigang
World Bank. (2023, January 10). Bangladesh: Towards a resilient water future. [This
citation is referencing a World Bank report on Bangladesh's water challenges
Department of Environment, Bangladesh. (2021). State of Environment Report
Bangladesh 2020. [This citation is referencing a Bangladesh government report on the
state of the environment]
Islam, M. R., Rahman, M. M., & Rakib, M. A. (2015). Assessment of water quality and
pollution sources of Turag River, Bangladesh. Journal of Environmental Science and
Health, Part A, 50(1), 80-89. [This citation is referencing a study on the water quality and
pollution sources of the Turag River]
Macedo-Sousa, P. et al. (2020). Biodiversity loss in polluted water bodies: a metaanalysis. Ecology Letters, 23(3), 424-438.
Rahman, M. S. et al. (2019). Impacts of river pollution on the aquatic biodiversity and
human health: A review from Bangladesh. Environmental Science and Pollution
Research, 26(15), 15023-15035.
World Bank. (2023). Bangladesh: Towards Sustainable Water Resource Management.
Washington, DC: World Bank.
Baum, G. (2015). Multiple anthropogenic stressors in Indonesia: Impacts on metabolism,
spatial distribution and community composition of coral reef organisms.
https://core.ac.uk/download/pdf/297280756.pdf
Exploring the Canary Current: Location, Importance, and Environmental Impact.
https://canariasacross.com/blog/exploring-the-mystery-of-the-canary-current-unveilingits-hidden-pathways-and-impact-on-marine-ecosystems
How does irrigation water quality affect farm food safety? - SMRTR Solutions.
https://smrtrsolution.com/how-does-irrigation-water-quality-affect-farm-food-safety/
Download