Pure, Healthy Water From Your Faucet - Start drinking healthy and stop drinking impurities with your own home Reverse Osmosis Water Purification. Express Water offers the highest impurity reduction rated RO Membrane for up to 99% reduction of major water impurities. We have designed our system’s five stages of filtration to work together for long lasting high grade impurity filtration, giving you the cleanest water and the best value in filtration. Choose the best in home filtration and start drinking healthy today!