Reliable Water Purifier Repair and RO Service in Kolkata at Affordable Rates Access to safe drinking water is a basic necessity, especially for households in urban areas. In Kolkata, where water quality can vary, owning a water purifier has become a must. Most homes depend on RO (Reverse Osmosis) systems https://brightcenter873.blogoxo.com/37292651/few-simple-techniques-for-best-ro-service