Reverse Osmosis drinking water purifier, 5 stages RO water purifier, RO water filters, for tap water. Counter top Reverse Osmosis drinking water purifier: Model: ... that may be present in your water: lead, cooper, barium, chromium, mercury, sodium, cadmium, fluoride, nitrite, nitrate, and selenium.5 ... and odors to enhance the quality of your drinking water. We are using NSF approved post carbon to ...