Now with Quick-connect fittings!Product Highlights - 11W Philips UV Sterilization Lamp in Stainless Steel Housing to remove bacteria and viruses - Clear housing on first stage permits you to observe filter status - Our RO systems are 100% wet tested before shippingPure and bacteria-free drinking water for your family! Note: If your water pressure is below 45PSI, we recommend our RO system with built-in booster pump, model RCC1UP-AK. 1st Stage: 5 micron polypropylene sediment filter 2nd Stage: GAC Carbon Filter 3rd Stage: CTO Carbon Filter 4th Stage: High Rejection 75GPD TFC reverse osmosis membrane 5th Stage: Post Inline Carbon 10" 6th Stage: Alkaline filter. 7th Stage: 11W UV sterilization lamp kills 99% of virus and bacteria. Note: The water coming out of the UV filter will be a little hot for first few seconds due to the water held inside the UV filter.Tank Capacity: 3.2 gallons Feed Water Source: city or well water Feed Water pH: 3.0 -11.0 Feed Water Pressure: 40-95 psi Feed Water Temperature: 40-100 °F (4 - 38 °C) Max Total Dissolved Solids: 2000 ppmRemoves the following contaminants: -Inorganic: Aluminium, Arsenic, Barium, Benzene, Cadmium, Calcium, Chloride, Chromium VI, Copper, Fluoride, Iron, Lead, Magnesium,Manganese, Mercury II, Nitrate, Potassium, Selenium IV, Silver, Sodium, Strontium, Sulphate, Total Dissolved Solids (TDS),Zinc -Organic: Adrazin, Aldrin, Chlorine, Chloroform, Dichlormethane, DOT, Endrin, Fluoranthene, Herbicides, Lindane, Methoxychlor, PCB, Perchlorethylene,Pesticides, Phenole, Tannic Acids, Toxaphene, Trichlorethlene, Trihalomethanes, V.O.C.