Reliable Water Purifier Repair and RO Service in Kolkata at Affordable Rates Access to pure drinking water is a basic necessity, especially for households in metro regions. In Kolkata, where water quality can vary, owning a water purifier has become a must. Most homes trust RO (Reverse Osmosis) systems for https://virtualsphere229.blog-mall.com/37753753/water-purifier-service-an-overview-on-how-things-works