STPUna zone A Wastewater Treatment Plant, Una, Himachal Pradesh

STPUna zone A is a wastewater treatment plant located in Una, a city in the state of Himachal Pradesh, India. The plant was designed to serve a population of about 16,903 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. For agglomerations of this scale, secondary treatment is typically required to meet discharge standards set by the Central Pollution Control Board (CPCB). The plant's non-operational status suggests that wastewater from Una may be discharged without treatment or managed through alternative means. However, Una lies in the foothills of the Himalayas, and local drainage likely feeds into the Sutlej River basin, which flows into the Indus River system and eventually reaches the Arabian Sea. The ecological health of these downstream waters depends on effective wastewater management in the region.

STPUna zone A is located in Una, Himachal Pradesh, a region in the foothills of the Himalayas. The local watershed drains into the Sutlej River, a major tributary of the Indus River system, which flows through Punjab and into the Arabian Sea. The area supports diverse aquatic life and is an important migratory corridor for birds. The non-operational status of the plant raises concerns about untreated wastewater potentially affecting local streams and downstream ecosystems.