Overview
Okhla Phase VI is a major wastewater treatment plant in Delhi, India, serving over 900,000 people. It operates as part of the city's extensive sewage infrastructure.
Okhla Phase VI is a large-scale wastewater treatment plant located in the South East Delhi district of Delhi, India, near Apollo Hospital on Mathura Road. Serving a population of approximately 901,962, it is one of the key facilities managing the capital's municipal wastewater. As a plant of this magnitude in India, it operates under the national environmental regulations, including the Water (Prevention and Control of Pollution) Act, 1974, and the Environment Protection Act, 1986. The Central Pollution Control Board (CPCB) and the Delhi Pollution Control Committee (DPCC) oversee compliance with discharge standards. For agglomerations of this size, secondary treatment is typically required, and advanced treatment may be mandated for sensitive areas. The treated effluent from Okhla Phase VI is discharged into the Yamuna River, which flows through Delhi and is a major tributary of the Ganges. The Yamuna is heavily impacted by urban and industrial pollution, making effective treatment critical for downstream water quality and the health of the Ganges basin ecosystem.
Environmental context
The plant discharges into the Yamuna River, which flows through Delhi and joins the Ganges at Triveni Sangam in Prayagraj. The Yamuna is a vital water source but faces severe pollution from untreated sewage and industrial effluents. The downstream Ganges supports diverse aquatic life and is a crucial resource for millions of people. Effective treatment at Okhla Phase VI helps reduce the pollutant load entering this sensitive river system.
Frequently asked questions
Okhla Phase VI is located in the South East Delhi district of Delhi, India, near Apollo Hospital on Mathura Road, in the Sarita Vihar Tehsil.
Okhla Phase VI serves approximately 901,962 people, making it a large-scale treatment facility for the Delhi region.
The treated wastewater from Okhla Phase VI is discharged into the Yamuna River, which flows through Delhi and is a major tributary of the Ganges.
Okhla Phase VI operates under India's Water (Prevention and Control of Pollution) Act, 1974, and the Environment Protection Act, 1986. Compliance is monitored by the Central Pollution Control Board (CPCB) and the Delhi Pollution Control Committee (DPCC).
For large agglomerations in India, secondary treatment is standard, and tertiary treatment may be required for discharge into sensitive water bodies like the Yamuna to meet stringent effluent standards.
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