Mumbai, July 10 BMC says nothing to panic, drinking water safe, but decomposing fish worries locals Thousands of dead fish were found floating on the Bhatsa river, which supplies water to Mumbai, early on Thursday morning, spreading panic in a Thane village, and nearby areas. While some attributed the large number deaths to pollution and use of chemicals in the fields, the Brihanmumbai Municipal Corporation (BMC) said there is no reason to panic and the drinking water is safe for consumption.