Tertiary Treated Water Conveyance Tunnel Project

The contract includes construction of an 8.48 km tunnel of 2.7 metre diameter from Dharavi Wastewater Treatment Facility (WwTF) to Ghatkopar WwTF using tunnel boring machine (TBM).

The contract also encompasses design and construction of ~144 metre deep shaft of 10 metre diameter at Dharavi WwTF and ~152 metre deep shaft of 14 metre diameter at Ghatkopar WwTF. 

The project is to be completed within a timeframe of 93 months. 

With this project, WEL at the consolidated level, will collect wastewater at source, convey it to the Dharavi Wastewater Treatment Facility and transport the treated water for further refinement and reuse. 

This unique combination sets a holistic benchmark for reuse of wastewater and significantly contributes to the circular economy by promoting the recycling of treated water.