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What should be the Coliform standard in India’s sewage treatment protocol in order to promote safe reuse of reclaimed water for domestic, industrial and agricultural use; are stringent standards affordable?

The discharge of untreated sewage and the ensuing bacterial contamination of surface water bodies pose a health risk in its reuse, be it for a variety of domestic purposes including safe drinking water, as well as exposing farmers who often use raw sewage or polluted streams to meet their irrigation needs.

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How to Clean the Yamuna

While the Delhi government has been debating on what needs to be done to clean the river, the pollution levels have only worsened. In its book Sewage Canal: How to Clean the Yamuna, published in 2007, the Centre for Science and Environment reported that the Delhi stretch of the river is not only dead but had an overload of coliform contamination. Two years later, the pollution data shows no respite to the river.