The Tribunal sought a detailed reply from the Haryana government by tomorrow on the petition which claimed that the water being released by the state was so polluted that it cannot be treated for drinking.
It may cause "a huge and irreparable loss to the citizens of Delhi and has a potential for a grave health crisis and water crisis in the National Capital Region (NCR)", the Board said.
The Board sought a direction to the state government "to urgently take steps to check and reduce dangerous ammonia levels and other consequent pollution being caused in the drinking water source/Yamuna in the supply of water being taken to Wazirabad pond reservoir in Delhi."
"Take immediate steps to reduce ammonia levels and keep them below 0.3 PPM and under no circumstances above 0.5 PPM," it said.
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"The unsafe levels of ammonia and consequent pollution for other chemicals as well the colour of the water which is being received from Haryana is blackish in colour and has a foul smell resulting in possibility of huge health outbreak in Delhi," the petition alleged.
It added that alternatively, the limited water available to Delhi, which was hugely inadequate to meet its demand, will have to be stopped, including to the NDMC area.
"In case the said water is put into the treatment plants and supplied, there is every possibility of causing a serious health hazard in Delhi due to high level of ammonia," it said.
It said that the the main cause of pollution appeared to be addition of untreated domestic and industrial waste from Panipat and Sonipat areas.
The stoppage of pollution in Yamuna, particularly upstream Wazirabad, is urgently needed in view of usage of raw water for treatment for drinking purposes serving about 35 per cent area of the National Capital, including the NDMC area, it added.