Reverse Osmosis Non-Pumped Drinking Water Filter System5 Stage Reverse Osmosis Water Filter System Non Pumped 50gpd Please see the manual attached for lists of the impurities it removes including all chlorine, lead, cryptosporidium, e coli, fluoride etc Removes THMs Trihalomethanes from your drinking water. The water enters the system then goes through the sediment pp 5micron water filter cartridge which is stage 1 then through an activated carbon filter and then a carbon block filter. In this phase of