STP Shitla Bridge - Chamba, Himachal Pradesh Wastewater Treatment Plant

STP Shitla Bridge is a wastewater treatment plant located in Chamba, a town in the Himalayan state of Himachal Pradesh, India. The plant serves a small population of 1,336 people, reflecting the scale of the local community. It is situated in a mountainous region, where treatment infrastructure is critical for protecting downstream water quality. The plant provides secondary treatment, which is the standard biological treatment process for municipal wastewater. With a designed capacity of 200 m³/day and a discharge volume of 200 m³/day, it operates at full capacity. As a small-scale facility, it aligns with India's national wastewater treatment standards, which mandate secondary treatment for urban agglomerations under the National River Conservation Plan. The treated effluent is discharged into local water bodies that ultimately drain into the Indus River basin. The plant plays a vital role in preventing untreated sewage from entering Himalayan streams, which are ecologically sensitive and support diverse aquatic life. Its operation helps maintain water quality in a region known for its biodiversity and downstream river systems.

The plant discharges into local streams that flow into the Ravi River, a tributary of the Indus River system. This watershed supports diverse aquatic ecosystems in the Himalayan foothills. The region is ecologically sensitive, with seasonal variations in flow and high biodiversity. Proper treatment is essential to prevent nutrient loading and protect downstream habitats.