Kasarwadi Phase III Wastewater Treatment Plant, Pimpri-Chinchwad, Maharashtra

Kasarwadi Phase III is a wastewater treatment plant located in the Kasarwadi area of Pimpri-Chinchwad, a twin city in the Pune metropolitan region of Maharashtra, India. The plant serves a population of 267,248, classifying it as a large agglomeration under Indian urban wastewater management standards. It is part of the broader wastewater infrastructure supporting the rapidly urbanizing Pune region. As a large-scale municipal plant, Kasarwadi Phase III is expected to comply with the Central Pollution Control Board (CPCB) norms under the Water (Prevention and Control of Pollution) Act of 1974. For agglomerations of this size, secondary treatment is typically required, with tertiary treatment increasingly mandated for discharge into sensitive water bodies. The treated effluent from Kasarwadi Phase III likely discharges into local watercourses 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 life and is ecologically significant, providing water for irrigation and domestic use across Maharashtra and Karnataka. Proper treatment at this plant helps reduce pollution loads in the downstream river system.

The plant's treated effluent is expected to enter 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 a vital water resource for agriculture and drinking water in Maharashtra and Karnataka, supporting diverse aquatic ecosystems. Effective wastewater treatment at Kasarwadi Phase III helps mitigate nutrient and pathogen loading, protecting downstream water quality and ecological health.