The Delhi Jal Board (DJB) has upgraded 10 sewage treatment plants across the city as part of an intensified campaign to clean the Yamuna River. The work is intended to reduce untreated discharge, improve treatment efficiency and curb pollution entering the river. Officials framed the upgrades as a key step in a broader strategy to restore water quality and protect public health. The programme forms part of a longer term urban sanitation plan that aligns treatment upgrades with efforts to reduce pollution at source and to improve the usability of riverfront spaces for residents. The upgrades included modernisation of processing units, enhancement of aeration and biofiltration systems and improved maintenance regimes to reduce operational lapses, according to the board. The measures are accompanied by increased monitoring of effluent quality and routine inspection to identify and plug illegal sewer connections. The DJB indicated that enhanced monitoring will allow quicker corrective action and sustained compliance with environmental standards. Maintenance schedules have been revised to reduce downtime. Coordination with municipal corporations and riverfront agencies has been intensified to ensure upstream controls and prevent inflow of untreated sewage from adjoining localities. Authorities noted that public awareness campaigns and stricter enforcement against dumping are integral to the cleanup drive. Complementary actions are planned for interception of drain flows and regular desilting to maintain conveyance capacity. Officials expect the combined efforts to yield gradual improvements in the Yamuna River's ecological condition, with benefits for aquatic life, water use and urban sanitation. The DJB said ongoing data collection will be used to measure progress and guide further investments and operational changes. The campaign is presented as a sustained municipal effort rather than a one-off project. Regular public reporting and independent water quality assessments will form part of the performance framework to ensure accountability and to calibrate interventions as required.