Aquasana’s AQ-4000 Counter Top Unit is an excellent water filter for a relatively low cost. It has continually been rated among the best value water filters on the market, as evidenced by its winning the Best Buy for water filters from Consumers Digest in 2003 through 2007. It is manufactured in the USA and has been tested by NSF Standards 42 and 53 (NSF/ANSI Standard 42 to remove chloramine, chlorine, taste and odor, and nominal particulate reduction, and NSF/ANSI Standard 53 to remove asbestos, chlordane, lead, mercury, MTBE, PCB, toxaphene, turbidity, cysts, and volatile organic compounds (VOCs)) and certified by the California Department of Health Services. The AQ-4000 will remove most standard water pollutants and uses a dual cartridge filtering system that combines carbon filtration, ion exchange and sub micron filtration to produce healthy, great-tasting water.
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