The "abnormal rise" in pollutants in raw water forced Delhi Jal Board to close the Wazirabad and Chandrawal water treatment plants for the first time and Lt Governor Najeeb Jung has asked Haryana government as well as Central Pollution Control Board to intervene urgently.
Almost one third of Delhi's population residing in the Walled city, Central Delhi, South Delhi and parts of North Delhi will be affected and supply of water has already been
hit in some areas, the Delhi Jal Board (DJB) said.     

It said rise in release of industrial affluents by Haryana into Yamuna has resulted in increase in ammonia level to a high of 2.6 mg per litre (mgl) against the limit of 0.2 mgl.
"The raw water supply from the river Yamuna has been badly affected due to the release of industrial pollutants coming from the Sonepat and Panipat drains. Today, the ammonia level has touched an all time high of 2.6 mgl," a top official of DJB said.
He said the DJB had been raising with Haryana the issue of release of untreated industrial waste into the Yamuna but to no avail.
"No concrete measures have been taken by Haryana to keep a check on the rising level of pollutants in the Yamuna water from which comes to Wazirabad pond from where it goes to the two treatment plants," the official said.

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