STP Kotkhai Zone II - Secondary Wastewater Treatment Plant in Kotkhai, Himachal Pradesh

STP Kotkhai Zone II is a wastewater treatment facility located in Kotkhai, a town in the Shimla district of Himachal Pradesh, India. The plant was designed to serve a population of 1,069 and has a capacity of 160 cubic meters per day. It is situated in the Himalayan foothills, an area characterized by steep terrain and seasonal water availability. The plant provides secondary treatment, which typically involves biological processes to reduce organic matter and suspended solids. In India, wastewater treatment plants of this scale are regulated under the Water (Prevention and Control of Pollution) Act, 1974, and are subject to standards set by the Central Pollution Control Board (CPCB). Secondary treatment is the minimum required for discharge into inland surface waters under Indian norms. The treated effluent from STP Kotkhai Zone II would likely discharge into a local stream or river that eventually drains into the Yamuna River basin, a major tributary of the Ganges. The region supports diverse aquatic life and is part of a sensitive Himalayan ecosystem. Proper operation of such plants is crucial to prevent contamination of downstream water sources used for drinking and irrigation.

The plant is located in the Himalayan region of Himachal Pradesh, where streams feed into the Yamuna River system, ultimately reaching the Ganges River and the Bay of Bengal. The local watershed supports biodiversity, including fish species and riparian vegetation. Discharge from the plant, if operational, would need to meet CPCB standards to protect downstream water quality and aquatic habitats.