Make the purest drinking water with your own home system. Great in the kitchen: Improve the taste of your cooking, coffee, ice, and drinks. Experience true Reverse Osmosis purification. Safe filtered fresh tasting H2O: Removes up to 99.99% of contaminants including Lead, Chlorine, Fluoride, Cyanide, Giardia, Radium, Asbestos, Calcite, Heavy Metal, Bacteria, Viruses, Pharmaceuticals, and countless other contaminants. Get setup fast with our Quick Connect tubing system. You only need to change your filters every 6 months. Includes fast flow faucet with 0.8 GPM delivery. Best for house, apartment, residential, well water, industrial, rv, machine, and office uses. Certified by an independent laboratory to NSF standard 58. Comes with 4 gallon (3.2 gallon water capacity) storage tank and tank stand. Includes all filters needed for setup and first 6 months of use and extra filters for 1st replacement. Can be installed undersink, in a basement or other remote locations. For every gallon of water produced the system discharges between one and three gallons. The system is compatible with 3/8" and 1/2" under sink connections. Operates on 40-80 PSI water pressure, you may need a Booster Pump or Pressure Regulator depending on your water pressure. Make your water cleaner and more convenient than any pitcher, faucet filter, or countertop systems. Express Water's 5 Stage Reverse Osmosis Water Filtration System RO5DX is the complete solution for your drinking water.