Water Quality | Centre for Science and Environment

Water Quality


Ganga needs water, not money

It was way back in 1986 that Rajiv Gandhi had launched the Ganga Action Plan. But years later, after much water (sewage) and money has flowed down the river, it is as bad as it could get. Why are we failing and what needs to be done differently to clean this and many other rivers?

BIS standards for drinking water

he BIS drinking water specification (IS 10500:1991), which is a voluntary standard, was drawn up in 1983. It was last revised 17 years ago. A revision initiated in 2003, is still in its draft stage.

About Delhi’s water

The quality of ground water is alkaline with pH ranging from 7.1 to 9.2, chloride content ranges between 21 and 1380 ppm. South of Delhi average chloride content is 250 ppm while in Najafgarh area it is around 1000 ppm rendering the water saline covering the area of 32 km. Sq. and marginally saline over the area of 129 sq km.

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