METTUR MUNICIPALIT Y STP NEAR MTPS Salem - Proposed Wastewater Treatment Plant in Tamil Nadu

The METTUR MUNICIPALIT Y STP NEAR MTPS Salem is a proposed wastewater treatment plant located in Pullavazhi Erikadu, near Mettur in Salem district, Tamil Nadu, India. The plant is planned to serve a population of 6,681, reflecting its role in managing domestic wastewater for a small urban agglomeration. As a proposed facility, the treatment process and capacity details are not yet finalized. In India, wastewater treatment plants of this scale typically operate under the National River Conservation Plan or state-level pollution control board regulations, which mandate secondary treatment as a minimum standard. The plant is expected to comply with the Central Pollution Control Board (CPCB) discharge norms for inland surface waters. The plant's discharge is likely to enter local water bodies that drain into the Cauvery River basin, a major river system in southern India. The Cauvery supports agriculture, drinking water, and diverse aquatic life, making proper treatment essential for downstream communities and ecosystems.

The plant is situated inland, over 50 km from the coast, and its treated effluent will likely discharge into local streams that feed into the Cauvery River basin. The Cauvery River is a critical water source for Tamil Nadu and Karnataka, supporting irrigation, drinking water, and a variety of fish species. Protecting this river from untreated sewage is vital for public health and ecological balance.