Due to the high level of pollutants in the Yamuna river at the Wazirabad pond, water production has been curtailed by 25-30 per cent in treatment plants at Wazirabad and Chandrawal, Delhi Jal Board officials said on Monday. Water supply will therefore be available at low pressure in several areas of Delhi from the evening of December 25 till the situation improves, they said. The areas likely to be affected are Civil lines, Hindu Rao Hospital and adjoining areas, Kamla Nagar, Shakti Nagar and adjoining areas, Karol Bagh, Pahar Ganj and NDMC areas, Old and New Rajinder Nagar, Patel Nagar (East and West), Baljeet Nagar, Prem Nagar, Inderpuri and adjoining areas, Kalkaji, Govindpuri, Tugalkabad, Sangam Vihar, and Ambedkar Nagar, it said. Other areas that will be affected include Prahladpur, Ramleela Ground, Delhi Gate, Subhash Park, Model Town, Gulabi Bagh, Punjabi Bagh, Jahangirpuri, Moolchand, South Extension, Greater Kailash, Burari, and adjoining areas and some of the Cantonment areas, the DJB said.