".The best purifier is reverse osmosis membrane technology. It removes just about everything... so you don't have a remove the contaminant of the month approach."
-U.S. News and Word Report August 12, 2002
All US Water Systems home reverse osmosis systems are built to meet the most demanding applications in water purification. They remove Arsenic, Trivalent Chromium, Perchlorate, Lead, Barium, Radium 226/228, Cadmium, TDS (Total Dissolved Solids), Fluoride, Turbidity, Copper, Hexavalent (Chromium 6), Selenium, Cysts (including Cyptosporidum, Giardia, Toxoplasma, and Entamoeba). Our reverse osmosis systems are built to last, and they always provide many years of drinking enjoyment and good health to their users. All of our reverse osmosis systems use only FDA/NSF certified components, including cartridges, faucets and tanks. US Water Systems offers high quality RO systems at unbeatable prices. All units are tested to ensure that the membrane is rejecting properly, and that the automatic shut-off and check valve function when pressurized. This water testing procedure makes sure that the units purchased don't leak, and are at the highest quality standards. Simply put, you can spend a lot more for a reverse osmosis system but you can't buy a better one.