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Name Location Dependent population Description Sources of pollution Impact Bharalu River: Assam, India: One of the most polluted rivers in the state of Assam. [19] The biochemical oxygen demand of the river is 52 mg/L in compared to the permissible limit set by the National River Conservation Directorate (NRCD) at 3 mg/L. [20]
The river supplies water to approximately 40% of India's population across 11 states [2] and serves an estimated 500 million people—more than any other river in the world. [3] [4] The Ganges is severely polluted with human waste and industrial contaminants. Currently, it is considered the most polluted river in the world. [5]
Water pollution is a major environmental issue in India. The largest source of water pollution in India is untreated sewage. [1] Other sources of pollution include agricultural runoff and unregulated small-scale industry. Most rivers, lakes and surface water in India are polluted due to industries, untreated sewage and solid wastes.
However, the 2012 Environmental Performance Index ranked India at 177th position out of 180 countries in 2018,as having the poorest relative air quality out of 132countries. [38] Of the world's 30 most polluted cities, India is home to 21 as of 2020. [39]
India's capital re-opened schools and some building sites on Monday, amid signs of receding air pollution that authorities had deemed hazardous, although a toxic foam besmirched stretches of the ...
Despite the heavy reliance of public life on the river, it was named as one of the 10 most dangerous rivers in the world in 2007 due to water pollution. [35] The first Ganges cleaning program (Ganga Action Plan) was started in 1985 with an aim to tackle the problem of excessive water pollution in the river. The program was gradually expanded to ...
India was the first country in the world to set up a ministry of non-conventional energy resources, in the early 1980s. Its cumulative grid interactive or grid tied renewable energy capacity (excluding large hydro) has reached 203.18 GW in October 2024, [ 30 ] which makes a significant change of 13.5% from the 178.98 GW recorded in October 2023.
A study by the World Health Organization (WHO) found that estimates of safe water could be overestimated if accounting for water quality, especially if the water sources were poorly maintained. [26] Runoff from development along the river in Pune, India could contribute to reduced water quality.