Water supplied by the municipal corporations might be of good quality at the source, but it travels through rusted old pipelines, which are also often unclean. Thus by the time it reaches the consumer, it’s contaminated. It gets worse when the water is stored in the exposed overhead tanks, which are dirty and unhygienic Contamination is even worse in case of borewell water that has high TDS level. This underground water is full of pesticides, insecticides, and harmful chemicals like
Arsenic, Fluoride, etc.