Best LG RO Water Purifiers with Stainless Steel Tanks

Choosing the best water purifier depends heavily on the quality of your source water. Here are the most critical factors to consider:

1. Test Your Water Source (TDS Level)

Total Dissolved Solids (TDS) determines which purification technology you need:

• Low TDS (below 200 ppm): Typically found in municipal water. A UV + UF purifier is sufficient to kill bacteria and remove cysts without stripping essential minerals.
• High TDS (above 200 ppm): Found in borewell, tanker, or mixed sources. You absolutely need an RO (Reverse Osmosis) purifier to remove heavy metals and excess salts.

2. Multi-Stage Purification (RO+UV+UF+MTDS)

Modern purifiers combine multiple technologies. RO removes dissolved impurities, UV kills microorganisms, and UF removes suspended particles. If you use RO, ensure it has a TDS Controller (MTDS) or Mineralizer to add essential minerals back into the water.

3. Maintenance and After-Sales Service

A water purifier is a long-term commitment. Filters typically need replacing every 6 to 12 months. Always check the Annual Maintenance Contract (AMC) cost before buying. Brands like AO Smith, Aquaguard, and Kent have strong pan-India service networks.