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

Kasarwadi Phase I 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 about 267,000, placing it in the category of a large agglomeration under Indian urban wastewater management standards. As an operational facility, Kasarwadi Phase I is part of the broader wastewater infrastructure managed by local municipal authorities. Plants of this scale in India typically employ secondary treatment technologies such as activated sludge or sequencing batch reactors to meet the effluent standards set by the Central Pollution Control Board (CPCB) under the Water (Prevention and Control of Pollution) Act, 1974. The treated effluent from the plant is discharged into local water bodies that ultimately drain into the Mula-Mutha river system, which flows through Pune and joins the Bhima River, a tributary of the Krishna River. This river system supports diverse aquatic life and is crucial for irrigation and domestic water supply in the region. The plant's operation helps reduce pollution load in these rivers, protecting downstream ecosystems and communities.

The plant discharges into 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 supports extensive agriculture and provides drinking water to millions. The region's monsoon climate leads to seasonal variations in river flow, making consistent treatment essential to prevent eutrophication and maintain water quality for downstream users.