TAILIEUCHUNG - Groundwater Pollution and Emerging Environmental Challenges of Industrial Effluent Irrigation in Mettupalayam Taluk, Tamil Nadu

Both human activities and natural activities can change the physical, chemical, and biological characteristics of water, and will have specific ramifications for human and ecosystem health. Water quality is affected by changes in nutrients, sedimentation, temperature, pH, heavy metals, non-metallic toxins, persistent organics and pesticides, and biological factors, among many other factors (Carr and Neary 2008). Following are brief discussions of these major contaminants. Many contaminants combine synergistically to cause worse, or different, impacts than the cumulative effects of a single pollutant. Continued inputs of contaminants will ultimately exceed an ecosystem’s resilience, leading to dramatic, non-linear changes that may be impossible. | CA Discussion Paper 4 .COMPREHENSIVE Assessment fl of water management in agriculture Groundwater Pollution and Emerging Environmental Challenges of Industrial Effluent Irrigation in Mettupalayam Taluk Tamil Nadu Sacchidananda Mukherjee and Prakash Nelliyat Comprehensive Assessment of Water Management in Agriculture Discussion Paper 4 Groundwater Pollution and Emerging Environmental Challenges of Industrial Effluent Irrigation in Mettupalayam Taluk Tamil Nadu Sacchidananda Mukherjee and Prakash Nelliyat International Water Management Institute P O Box 2075 Colombo Sri Lanka The Comprehensive Assessment assessment is organized through the CGIAR s Systemwide Initiative on Water Management SWIM which is convened by the International Water Management Institute. The Assessment is carried out with inputs from over 100 national and international development and research organizations including CGIAR Centers and FAO. Financial support for the Assessment comes from a range of donors including core support from the Governments of the Netherlands Switzerland and the World Bank in support of Systemwide Programs. Project-specific support comes from the Governments of Austria Japan Sweden through the Swedish Water House and Taiwan Challenge Program on Water and Food CPWF CGIAR Gender and Diversity Program EU support to the ISIIMM Project FAO the OPEC Fund and the Rockefeller Foundation and Oxfam Novib. Cosponsors of the Assessment are the Consultative Group on International Agricultural Research CGIAR Convention on Biological Diversity CBD Food and Agriculture Organization FAO and the Ramsar Convention. The authors Sacchidananda Mukherjee and Prakash Nelliyat are both research scholars at the Madras School of Economics MSE in Chennai Tamil Nadu India. Acknowledgements This study has been undertaken as a part of the project on Water Resources Livelihood Security and Stakeholder Initiatives in the Bhavani River Basin Tamil Nadu funded under the Comprehensive .

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