To stop untreated sewage entering Yamuna, Delhi to get 15 new decentralised treatment plants

3 min readNew DelhiJul 30, 2026 12:01 AM IST According to Environment department records, there has been a marginal increase in Delhi's utilisation of installed sewage treatment capacity over the last three years – rising from 74.2% in 2022 to 79.16% in 2024, and reaching 80.9% in 2025. Seeking to tackle the single largest source of pollution entering Yamuna river, the Delhi Jal Board (DJB) on Wednesday approved sewerage and wastewater treatment projects worth around Rs 4,500 crore, including setting up of 15 decentralised sewage treatment plants (DSTPs), covering 1,000 km of sewer lines and upgrading existing treatment infrastructure. “These projects are expected to benefit around 20 lakh residents,” said Water Minister Parvesh Sahib Singh, adding that the work is set to be completed with