Question raised in Lok Sabha on Capacity of Sewage Treatment Plants, 14/03/2017. As per a report published by Central Pollution Control Board (CPCB) in March, 2015, the sewage generation from urban areas in the country is estimated at 61,948 million litres per day (mld), against which a sewage treatment capacity of 23,277 mld, or 37% of the sewage generation is available. The State-wise details of sewage generation from urban areas and corresponding sewage treatment capacity available are at Annexure.