Implementation of laws a must, says Dwarkanath Sanzgiri, Ex-chief engineer of water supply projects in BMC

Dwarkanath Sanzgiri had executed few water tunnel projects during his tenure with the BMC. He had also worked on the Middle Vaitarna project. He was also associated with key projects to augment water supply to Mumbai. Edited excerpts of an interview:

What other the sources should the BMC look to meet the ever-rising water demands in Mumbai?

Rainwater harvesting an option that the civic body needs to make mandatory for all new buildings coming up in the city. This will increase groundwater level as well make more water available for purposes other than drinking. The civic body should be strict about implementing such moves.

To what extent, leakage and theft impact water supply?

Yes, leakage and theft impact water supply to some extent. But, it has been observed that water losses through leakage are prevalent across countries, even those that claim to have better infrastructures. It’s a bit more in Mumbai. I had read a study that even London had around 18% water loss. However, regular maintenance of pipelines can surely make more water available to citizens.

Why do people hesitate to use recycled water?

There is a taboo attached to the use of recycled water. Recycled water can be used for purposes like the toilet, washing cars, gardening among others.