Sewage Treatment Plant Pumping Station TNHB Colony Ayapakkam, Chennai | Tamil Nadu Wastewater Infrastructure

Sewage Treatment Plant Pumping Station TNHB Colony Ayapakkam is a municipal wastewater facility located in the Ambattur zone of Chennai Corporation, Tamil Nadu, India. The plant is currently under construction and is designed to serve a population of 46,768 residents in the TNHB Colony area. It is part of the Chennai Metropolitan Water Supply and Sewerage Board (CMWSSB) infrastructure expansion. As an under-construction plant, its treatment process and discharge details are not yet finalized. However, Indian wastewater treatment plants serving populations of this scale typically employ secondary treatment technologies such as activated sludge or sequencing batch reactors, in compliance with the Central Pollution Control Board (CPCB) standards. The designed capacity of 1.00 million liters per day indicates a medium-scale facility. The plant will discharge treated wastewater into local water bodies that ultimately drain into the Bay of Bengal via the Cooum River or Adyar River systems. This coastal discharge requires adherence to stringent effluent standards to protect marine and estuarine ecosystems. The facility's operation will contribute to reducing untreated sewage flow into Chennai's waterways, improving public health and environmental quality.

The plant is located in the Chennai basin, where treated wastewater will likely be discharged into the Cooum River or its tributaries, which flow through Chennai and empty into the Bay of Bengal. The downstream environment includes the highly urbanized Chennai coast, which supports diverse marine life and is an important fishing ground. Protecting this coastal ecosystem from nutrient pollution and pathogens is critical, as untreated sewage has historically caused eutrophication and health hazards in the region.