... purifier, RO water filters, for tap water. Home use water filter Counter top Reverse Osmosis drinking water purifier: Model: RO ... remove the following hard water contaminants that may be present in your water: lead, cooper, barium, chromium, mercury, sodium, ... 3.2Gallon NSF standard water pressure tank2) FDA approved filter housings3) Auto shut-off valve, mini flow restrictors, stainless steel check ...