The city of Mumbai was ranked first in the list of Indian cities to have the cleanest tap water, according to a study by Bureau of Indian Standards.

The study tested samples from 21 state capitals. The 10 samples which were collected from different parts of Mumbai cleared the BIS test and passed all the 19 parameters. Union minister for consumer affairs, food and public distribution Ram Vilas Paswan took to the microblogging site to say, "Tests were conducted on various parameters such as organoleptic and physical tests, chemical test, toxic substances and bacteriological tests in the first stage."