Yes, we can use RO (Reverse Osmosis) water purifiers for municipal water in India. The quality of your municipal water determines whether you need a RO purifier or not.
TDS (Total Dissolved Solids), heavy metals, and harmful microorganisms can’t be removed by boiling or conventional water purifiers in some areas.
RO remove 99% of bacteria, viruses, heavy metals, and TDS. They can purify municipal water, especially in poor water quality areas.
According to the Central Pollution Control Board (CPCB), India, 70% of surface water is unfit for consumption without treatment. The Bhabha Atomic Research Centre (BARC) found that Mumbai’s municipal water supply’s TDS level was 135 mg/l, which is below the BIS’s 500 mg/l limit. In some parts of Delhi, municipal water TDS levels reached 2000 mg/l, four times the safe limit.
Thus, using a RO water purifier in a municipality with high TDS or other contaminants is a good idea. However, RO purifiers remove vital minerals from water. Thus, RO purifiers with a TDS controller or mineralizer, which restores minerals, are recommended.