STP Kondli Old Phase II - Large Sewage Treatment Plant in East Delhi, India

STP Kondli Old Phase II is a major wastewater treatment facility located in the Kondli area of East Delhi, India. Serving a population of approximately 751,635, it is one of the larger treatment plants in the Delhi region, playing a critical role in managing the city's sewage. The plant is operational and contributes to the sanitation infrastructure of the national capital territory. As a large-scale treatment plant in India, it is subject to the country's environmental norms for sewage treatment, including the Central Pollution Control Board (CPCB) standards. Its scale indicates significant infrastructure investment. The treated effluent from STP Kondli Old Phase II is discharged into the Yamuna River system, which flows through Delhi and eventually joins the Ganges. The Yamuna is a vital water source for the region but faces severe pollution challenges. The plant's operation is crucial for reducing the organic load and contaminants entering the river, thereby protecting downstream ecosystems and communities that rely on the river for water supply and agriculture.

The plant discharges into the Yamuna River, a major tributary of the Ganges, which ultimately drains into the Bay of Bengal. The Yamuna in the Delhi stretch is heavily impacted by urban runoff and untreated sewage, making the plant's role critical for improving water quality. The downstream environment includes ecologically sensitive areas such as the Ganges River dolphin habitat and important agricultural regions that depend on river water for irrigation.