STP Rewalsar - Wastewater Treatment Plant in Rewalsar, Himachal Pradesh, India

STP Rewalsar is a wastewater treatment facility located on Kora Road in Rewalsar, a town in the Mandi district of Himachal Pradesh, India. The plant serves a population of 2,338 and has a designed capacity of 350 cubic meters per day, with a reported discharge volume of 350 m³/day. The plant provides secondary treatment, which is the standard biological treatment stage for municipal wastewater. In India, wastewater treatment plants are regulated under the Water (Prevention and Control of Pollution) Act, 1974, and the Central Pollution Control Board (CPCB) sets effluent standards. For small agglomerations like Rewalsar, secondary treatment is typically required to meet discharge norms. The treated effluent from STP Rewalsar likely discharges into a local water body, potentially a stream or river within the Beas River basin, which flows through Himachal Pradesh and eventually joins the Sutlej River in Punjab. The region is ecologically sensitive due to its proximity to the Himalayas and supports diverse aquatic life. The plant's non-operational status raises concerns about untreated wastewater entering the local environment.

STP Rewalsar is situated in the Himalayan foothills, within the Beas River basin. The Beas River originates in the Himalayas and flows through Himachal Pradesh and Punjab, eventually joining the Sutlej River. The local watershed supports diverse aquatic ecosystems, including fish species like the golden mahseer. The plant's non-operational status could lead to untreated wastewater affecting downstream water quality and ecological health.