Going by the matrix of tests carried out by the Bureau of Indian Standards for the Ministry, Delhi has abysmal water quality, Chennai and Kolkata rank very low, and Mumbai is the only city with acceptable results. City water systems are normatively required to comply with the national standard for drinking water, IS 10500:2012
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Unknown titleibution red-flagging tap water quality in major Indian cities comes as no surprise, given that many official water distribution agencies routinely advise consumers to consume only boiled water. <span>Going by the matrix of tests carried out by the Bureau of Indian Standards for the Ministry, Delhi has abysmal water quality, Chennai and Kolkata rank very low, and Mumbai is the only city with acceptable results. City water systems are normatively required to comply with the national standard for drinking water, IS 10500:2012, but most obviously feel no compulsion to do so. Their lack of initiative could be attributed partly to the expanding footprint of packaged drinking water, especially in populous cities Summary
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