Water safety concerns continue in Janakpuri as CPCB detects E coli, faecal coliform in samples
Earlier in May, CPCB had collected water samples and found that around 30%, or six out of 20 samples, contained E. coli and faecal coliform. According to standards, total coliform and E. coli should be completely absent in drinking water.
National Green Tribunal (NGT) had criticised the Delhi Jal Board (DJB) for failing to provide clean drinking water to residents. NGT is currently hearing a plea filed by Residents Welfare Association (RWA) of A1 Block, Janakpuri, which claims that the water supplied does not meet required safety norms.
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In its order dated May 30, NGT directed DJB to ensure the supply of uncontaminated drinking water to the affected residents through an alternative source until the contamination is addressed. The tribunal also ordered fresh sampling on June 30 by the CPCB at six households, with the report due by July 15.
On June 30, CPCB collected water samples from five houses supplied by the DJB; residents of the sixth house did not permit sampling, so samples were taken from another house within the same block.
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The report stated, "Total coliform and E. coli have been detected in all five samples. The Drinking Water Standards of the Bureau of Indian Standards (IS 10500:2012) prescribe that total coliform and E. coli must not be detected in 100 ml of drinking water samples." The levels of E. coli ranged from 7.8 most probable number (MPN) per 100 ml to 280,000 units per 100 ml.
The bench, headed by Justice Prakash Shrivastava, in its May 30 order, remarked, "It is unfortunate that this matter has been pending before the tribunal for over three months. Such a serious complaint regarding the supply of sewage-contaminated water, with detected total coliform and E. coli, has yet to be addressed by the DJB. They must be sensitive to the hardships faced by residents due to the lack of clean drinking water.
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