India, June 4 -- A comprehensive drive to clean overhead water tanks across various sectors and localities of Greater Noida commenced on Tuesday to ensure a clean and safe drinking water supply, officials said on Tuesday.

The sanitation drive that started with the overhead tank in Sigma IV, will last till July 10 and cover multiple sectors including Chi, Omega, Knowledge Park, and Gamma, among others.

While cleaning of underground water reservoirs is carried out by authorities routinely, this initiative includes systematic cleaning of overhead tanks handled by the Greater Noida authority. These tanks directly supply water to households as well, officials said.

"On the days when tank cleaning is scheduled in a particular sector, morning...