State approves underground drainage project for 12 wards of Chitlapakkam, Sembakkamand Madambakkam in Tamil Nadu May 28, 2025 | Announced/Approved, Key Segments, Municipal Wastewater, Project Updates, Wastewater The Tamil Nadu government has approved Tambaram Corporation’s proposal of underground drainage project for 12 wards of Chitlapakkam, Sembakkamand Madambakkam. This content is restricted.