Chinchwad Phase I Wastewater Treatment Plant, Pimpri-Chinchwad, Maharashtra

Chinchwad Phase I is a municipal wastewater treatment plant located in Chinchwad, Pimpri-Chinchwad, in the Pune district of Maharashtra, India. The plant serves a population of approximately 200,436, placing it in the category of a large agglomeration under Indian urban wastewater management standards. It is part of the broader wastewater infrastructure supporting the rapidly urbanizing Pimpri-Chinchwad area. As a plant serving over 200,000 people, it falls under India's regulatory framework for sewage treatment, which mandates secondary treatment as a minimum for such scales. In India, the Central Pollution Control Board (CPCB) and state pollution control boards enforce discharge standards under the Water (Prevention and Control of Pollution) Act, 1974, requiring compliance with prescribed effluent quality parameters. The treated wastewater from Chinchwad Phase I likely discharges into local water bodies that drain into the Mula-Mutha river system, which flows through Pune and ultimately joins the Bhima River, a tributary of the Krishna River. The Krishna River basin supports diverse aquatic ecosystems and is a critical water resource for agriculture and drinking water in the region. Proper treatment helps protect downstream water quality and public health.

The plant's treated effluent likely enters the Mula-Mutha river system, which flows through Pune and joins the Bhima River, a major tributary of the Krishna River. The Krishna River basin is ecologically significant, supporting diverse aquatic life and providing water for irrigation and drinking. Downstream, the river drains into the Bay of Bengal, making effective wastewater treatment essential for preventing nutrient pollution and protecting coastal ecosystems.