The Delhi Jal Board (DJB) on Tuesday informed that due to high level of pollutants (ammonia more than 5.0 ppm) in Yamuna river, water supply will be affected in several areas from March 28 evening till the situation improves. The DJB said that it has alerted people that the supply will be available at low pressure from Tuesday evening in many areas, including Greater Kailash, South Extension, Moolchand, Model Town, Punjabi Bagh, and parts of Civil Lines and Cantonment.