CRRT to plug 23 sewerage outfalls in Cooum River, Tamil Nadu April 6, 2023 | Announced, Key Segments, Municipal Wastewater, News & Developments, Project Updates, State Initiatives, Wastewater The Chennai River Restoration Trust (CRRT) is likely to take up the work of plugging 23 sewerage outfalls into Cooum River. This content is restricted.