The Delhi Jal Board on 7 July said that water supply will be affected in some parts of Delhi on 9 July due to ammonia pollution in the Yamuna river.
Adding further, the utility said that the concentration of ammonia in the river has increased to two particulates per million (ppm) due to pollution from Haryana. The water level in Wazirabad pond is also low, i.e. 670 feet, as against the normal 674.5 feet.
Thereafter, operations at Wazirabad, Chandrawal and Okhla WTPs have been affected and water supply will remain affected till the situation improves.
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Water will be available at low pressure in parts of North Delhi, West Delhi, North Delhi, Central Delhi, South Delhi and New Delhi Municipal Council areas including Delhi Cantonment.
In addition, the treatment capacity of Chandrawal, Wazirabad and Okhla WTPs is 90 MGD, 135 MGD and 20 MGD respectively.
According to the Bureau of Indian Standards, the permissible maximum limit of ammonia in drinking water is 0.5 ppm. At present, the Delhi Jal Board can treat up to 0.9 ppm.
With PTI input.