When considering the best RO in India, it's crucial to look for models that offer robust purification capabilities. Effective RO water purifiers utilize a multi-stage filtration process that includes sediment filters, activated carbon filters, and the reverse osmosis membrane itself. This combination ensures the removal of contaminants such as dissolved salts, heavy metals, pesticides, and microbes, providing safe and clean drinking water. Additionally, factors such as water wastage ratio, purification capacity, maintenance requirements, and energy efficiency are also important considerations when choosing an ideal RO water purifier for your home or office.