STP Rohru Wastewater Treatment Plant, Rohru, Himachal Pradesh

STP Rohru is a municipal wastewater treatment facility located in Rohru, a town in the Shimla district of Himachal Pradesh, India. The plant serves a population of about 6,781 people, making it a small-scale treatment facility catering to the local community's sanitation needs. Situated in the Himalayan foothills, the plant plays a vital role in managing domestic wastewater from the town. As a plant in India, STP Rohru operates under the national regulatory framework of the Central Pollution Control Board (CPCB) and the Himachal Pradesh State Pollution Control Board. For a facility serving fewer than 10,000 people, Indian regulations typically require at least secondary treatment, often through technologies like activated sludge or oxidation ponds, to meet effluent standards before discharge. The treated effluent from STP Rohru is likely discharged into a local stream or river that eventually feeds into the Yamuna River basin, a major river system in northern India. The Yamuna flows through the Indo-Gangetic Plain and ultimately joins the Ganges, supporting diverse aquatic life and providing water for millions downstream. The plant's operation helps protect these water bodies from untreated sewage pollution.

STP Rohru discharges treated wastewater into a local tributary of the Yamuna River system, which flows through the Himalayan region and eventually into the Ganges River. The downstream environment includes ecologically sensitive areas that support diverse aquatic species and provide water for agriculture and drinking. Proper treatment is essential to prevent nutrient loading and pathogen contamination in these waters.