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Reusing treated wastewater in irrigation in India could have reduced greenhouse gas emissions by 1.3 million tonnes in 2021, according to the latest study by a think tank. Greenhouse gases causing greenhouse effect are one of the main drivers of climate change. As greenhouse gas emissions blanket the Earth, they trap the sun's heat. This leads to global warming and climate change. The study by 'Council on Energy, Environment and Water (CEEW)' looks at mainstreaming the reuse of treated wastewater in the country. It assesses the economic and market potential for the reuse of treated wastewater (domestic sewage) for irrigation at the national scale and makes recommendations to strengthen the existing governance on reuse. According to the analysis using the Central Water Commission (CWC) estimates, 11 out of 15 major river basins in India will experience water stress by 2025, with annual per capita renewable water availability below 1,700 cubic metres. "Hence, it is essential to expl