India, Jan. 25 -- Water supply in the Capital was restored to nearly normal by Saturday evening, Delhi Jal Board (DJB) officials said. Ammonia levels which disrupted operations at a key water treatment plant (WTP) were declining in the Yamuna.

All canal-based WTPs in Haiderpur, Bawana, Dwarka and Nangloi are operating at full capacity. The Chandrawal and Okhla plants are also functioning at maximum output. The Wazirabad WTP, operating at around 85% capacity, was being fixed as of Saturday night.

A DJB official stated, "Ammonia concentration was recorded at approximately 2.5 parts per million (ppm), which is above the threshold for optimal treatment, necessitating a temporary reduction in processing volumes. We expect the Wazirabad plant...