Titwala West Wastewater Treatment Plant, Kalyan-Dombivli, Maharashtra

Titwala west is a wastewater treatment plant located in Titwala, Kalyan-Dombivli, in the Thane district of Maharashtra, India. The facility serves a population of 6,681 and has a designed capacity of 1.00 million liters per day, making it a small-scale treatment plant catering to a local community. As a plant in India, it operates under the national regulatory framework of the Water (Prevention and Control of Pollution) Act, 1974, and is subject to standards set by the Central Pollution Control Board (CPCB) and the Maharashtra Pollution Control Board (MPCB). For small agglomerations like this, primary or secondary treatment is typically required to meet discharge norms. The treated effluent from the plant is likely discharged into a local watercourse that drains into the Ulhas River, which flows through the Thane region and eventually into the Arabian Sea. The plant plays a role in protecting the local watershed and downstream ecosystems from untreated sewage.

The plant is situated inland, more than 50 km from the coast, in the Ulhas River basin. The Ulhas River originates in the Western Ghats and flows westward through Maharashtra, eventually emptying into the Arabian Sea near Vasai Creek. The river supports diverse aquatic life and is used for irrigation and domestic purposes downstream. Proper treatment at this plant helps reduce pollution loads in the river and protects the estuarine ecosystem at the river mouth.