The Brihanmumbai Municipal Corporation (BMC) has appointed a consultant to study the feasibility of treating effluent to obtain potable water on a pilot basis. The project at Colaba Sewage Treatment Plant (STP) will take at least three years. This is an attempt to look for alternative sources of drinking water in light of climate change.

The BMC has undertaken a project for the construction and upgrading of seven sewage treatment plants (STPs) at Worli, Bandra, Dharavi, Versova, Malad, Ghatkopar, and Bhandup to treat 2,464 million litres of sewage daily under the Mumbai Sewage Disposal Project-II (MSDP). At present, the Colaba plant treats wastewater to the required standards before allowing it to be released into the nearest water source. Now the rest will be upgraded to these standards.