STP Nadaun Wastewater Treatment Plant, Nadaun, Himachal Pradesh

STP Nadaun is a wastewater treatment plant located in Nadaun, a town in the Hamirpur district of Himachal Pradesh, India. The plant was designed to serve a population of approximately 11,291 people, placing it in the small to medium agglomeration category. In India, wastewater treatment plants are regulated under the Water (Prevention and Control of Pollution) Act, 1974, and the Environment Protection Act, 1986. The Central Pollution Control Board (CPCB) and state pollution control boards set discharge standards. For plants of this scale, secondary treatment is typically required to meet effluent standards before discharge into water bodies. The plant is located inland in the Himalayan foothills, and its treated effluent would likely drain into local streams that feed into the Beas River system. The Beas River flows through Himachal Pradesh and Punjab before joining the Sutlej River in Pakistan. The region is ecologically sensitive, supporting diverse aquatic life and providing water for agriculture and domestic use downstream.

STP Nadaun is situated in the Beas River basin, a major tributary of the Indus River system. The Beas River originates in the Himalayas and flows through Himachal Pradesh and Punjab, eventually joining the Sutlej River in Pakistan. The river supports diverse aquatic ecosystems, including fish species like the golden mahseer, and provides water for irrigation and drinking. The plant's location in the foothills means that any discharge would affect downstream water quality in a region that is ecologically sensitive and important for biodiversity.