STP Sujanpur Zone II - Wastewater Treatment Plant in Tira Sujanpur, Himachal Pradesh

STP Sujanpur Zone II is a wastewater treatment plant located in Tira Sujanpur, Himachal Pradesh, India. The plant was designed to serve a population of approximately 9,186 people, placing it in the small agglomeration category. It is situated in the foothills of the Himalayas, a region known for its sensitive mountain ecosystems. The plant is currently non-operational. Under India's environmental regulations, sewage treatment plants of this scale are typically required to meet secondary treatment standards as per the Central Pollution Control Board (CPCB) norms. For a population of this size, a typical treatment plant would have a capacity of around 1-2 million liters per day. The plant's treated effluent would have discharged into local streams that eventually drain into the Beas River, a major tributary of the Indus River system. The Beas River supports diverse aquatic life and provides water for irrigation and drinking in the region. The non-operational status of the plant raises concerns about untreated wastewater entering the local environment.

The plant is located in the Beas River basin, which drains into the Indus River and ultimately the Arabian Sea. The Beas River is a critical water source for Himachal Pradesh and Punjab, supporting agriculture and biodiversity. The region's mountainous terrain makes water bodies particularly vulnerable to pollution from untreated sewage, as streams are steep and fast-flowing, reducing natural self-purification capacity.