CBTech Water Guardian Drinking Water System Model - MPADC Countertop water filter that easily attaches to a standard faucet without tools Tested and certified under NSF/ANSI Standards 42, 53 and 401 to treat Aesthetic Effects, Health Effects and Emerging Compounds, respectively, as well as a broad range of contaminants (see product Performance Data Sheet for specific contaminant reduction information) Lifetime Warranty on housing, contingent upon annual cartridge replacement