Do You Need It At All?
a) RO systems are useful where the TDS levels are above 1,000 mg/litre and hardness is on the higher side. If the municipal water supply is quite satisfactory and has permissible TDS levels, RO purifiers are not required – UV purifiers should be used instead. b) So, get your water tested. A water test will specify many factors. It will also help you make a decision based on facts and figures. For example, if the water has a very high amount of magnesium, fluoride, nitrates or calcium salts, RO purifier will be the best for you. c) If the water supplied at your location is highly contaminated (with microbes, bacteria and virus) and is dirty as well, RO/UF + UV purifiers are the best solution. The UV rays destroy the microbes and the RO/ UF filters out their dead bodies and other contaminants.