Overview
TWAD Board Underground sewer system STP serves Virudhunagar, Tamil Nadu, India. The operational plant handles wastewater for approximately 55,922 people under India's regulatory framework.
TWAD Board Underground sewer system STP is a municipal wastewater treatment facility located in Virudhunagar, Tamil Nadu, India. The plant serves a population of approximately 55,922 residents, making it a medium-sized agglomeration within the state's water and sanitation infrastructure. As an operational plant under the Tamil Nadu Water and Drainage Board (TWAD Board), it operates within India's environmental regulations, including the Water (Prevention and Control of Pollution) Act of 1974. For agglomerations of this scale, secondary treatment is typically required to meet discharge standards set by the Tamil Nadu Pollution Control Board. The plant's treated effluent is discharged into local water bodies that eventually drain into the Gulf of Mannar via the Vaigai River basin. This coastal ecosystem supports diverse marine life and is an important area for fisheries and biodiversity in the region.
Environmental context
The plant discharges into the Vaigai River basin, which flows southeast through Tamil Nadu and empties into the Gulf of Mannar, a biologically rich marine ecosystem. The Gulf of Mannar supports coral reefs, seagrass beds, and diverse aquatic species, making proper wastewater treatment critical to prevent nutrient pollution and protect coastal habitats.
Frequently asked questions
The plant is located in Virudhunagar, Tamil Nadu, India, with coordinates 9.566 N, 77.960 E.
The plant serves approximately 55,922 residents in Virudhunagar.
The treated effluent is discharged into local water bodies within the Vaigai River basin, which ultimately drains into the Gulf of Mannar.
The plant operates under India's Water (Prevention and Control of Pollution) Act, 1974, and is subject to standards set by the Tamil Nadu Pollution Control Board.
For medium-sized agglomerations in India, secondary treatment is typically required to meet discharge standards, often using activated sludge or similar biological processes.
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