Overview
STP Kalka is a non-operational wastewater treatment plant in Parwanoo, Himachal Pradesh, India, serving a population of 8,017. The plant is located inland, away from the coast.
STP Kalka is a wastewater treatment plant situated in Parwanoo, Himachal Pradesh, India, along the Kalka Bypass in Sector-1. It was designed to serve a population of 8,017, placing it in the small 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 small agglomerations like this, secondary treatment is typically required to meet discharge standards set by the Central Pollution Control Board (CPCB). The plant is located inland, more than 50 km from the coast, and its treated effluent would likely discharge into local water bodies that eventually drain into the Yamuna River basin or the Ghaggar River system. These rivers support agricultural and domestic water use in the region and flow towards the plains of northern India.
Environmental context
The plant is situated in the foothills of the Himalayas, within the Solan district of Himachal Pradesh. The local watershed drains into the Ghaggar River, which flows through the plains of Punjab and Haryana before eventually reaching the Thar Desert. The region supports diverse aquatic life and is important for groundwater recharge. The plant's non-operational status may pose risks to local water quality if untreated sewage enters nearby streams.
Frequently asked questions
STP Kalka is located on Kalka Bypass, Sector-1, Parwanoo, in the Solan district of Himachal Pradesh, India.
STP Kalka was designed to serve a population of 8,017, classifying it as a small agglomeration.
STP Kalka is currently non-operational, meaning it is not actively treating wastewater.
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 sets discharge standards, and state pollution control boards enforce permits.
For small agglomerations in India, secondary treatment such as activated sludge or sequencing batch reactors is commonly required to meet CPCB standards before discharge.
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