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Reduction Claim:
For an explanation of contaminant reduction claims, visit NSF's Drinking Water site. Choosing one or more Reduction Claims within an NSF/ANSI Standard will provide a list of all products certified for ANY of the selected claims, and also will include a complete list of all other claims for which those same products are certified. Alternatively, if you would like to search for products that are certified for ALL selected claims, please check here:
Reduction Claims for Drinking Water Treatment Units - Aesthetic Effects
Bacteriostatic Effects
Chloramine Reduction
Chlorine Reduction
Filter First
Nominal Particulate Reduction
Taste and Odor Reduction
Zinc Reduction
Reduction Claims for Cation Exchange Water Softeners
Barium Reduction
Efficiency Rated
Hardness Reduction
Radium 226/228 Reduction
Reduction Claims for Drinking Water Treatment Units - Health Effects
1,1,1-Trichloroethane Reduction
1,1,2,2-Tetrachloroethane Reduction
1,1,2-Trichloroethane Reduction
1,1-Dichloroethylene Reduction
1,2,3-Trichloropropane
1,2,4-Trichlorobenzene Reduction
1,2-Dichloroethane Reduction
1,2-Dichloropropane Reduction
2,4,5-TP (Silvex) Reduction
2,4-D Reduction
Alachlor Reduction
Arsenic (Pentavalent)<=50 ppb Reduction
Asbestos Reduction
Atrazine Reduction
Benzene Reduction
Cadmium Reduction
Carbofuran Reduction
Carbon Tetrachloride Reduction
Chlordane Reduction
Chlorobenzene Reduction
Chloropicrin Reduction
Chromium (Hexavalent) Reduction
Chromium (Trivalent) Reduction
Chromium Reduction
Cis-1,2-Dichloroethylene Reduction
Cis-1,3-Dichloropropylene Reduction
Copper Reduction
Cyst Reduction
Dibromochloropropane Reduct.
Dinoseb Reduction
Endrin Reduction
Ethylbenzene Reduction
Ethylene Dibromide Reduction
Filter First
Haloacetonitriles Reduction
Haloketones Reduction
Heptachlor Epoxide Reduction
Heptachlor Reduction
Hexachlorobutadiene Reduction
Hexachlorocyclopentadiene Reduction
Lead Reduction
Lindane Reduction
MTBE Reduction
Mercury Reduction
Methoxychlor Reduction
Microcystin Reduction
Monochlorobenzene Reduction
O-Dichlorobenzene Reduction
P-Dichlorobenzene Reduction
PCB Reduction
PFOA Reduction
PFOS Reduction
Pentachlorophenol Reduction
Radon Reduction
Selenium Reduction
Simazine Reduction
Styrene Reduction
Tetrachloroethylene Reduction
Toluene Reduction
Total PFAS Reduction
Toxaphene Reduction
Trans-1,2-Dichloroethylene Reduction
Tribromoacetic Acid Reduction
Trichloroethylene Reduction
Trihalomethanes (TTHM) Reduction
Turbidity Reduction
VOC Reduction
Xylenes Reduction
Reduction Claims for Ultraviolet Microbiological Water Treatment Systems
Disinfection Performance, Class A
Disinfection Performance, Class B
Reduction Claims for Reverse Osmosis Drinking Water Treatment Systems
1,1,1-Trichloroethane Reduction
1,1,2,2-Tetrachloroethane Reduction
1,1,2-Trichloroethane Reduction
1,1-Dichloroethylene Reduction
1,2,4-Trichlorobenzene Reduction
1,2-Dichloroethane Reduction
1,2-Dichloropropane Reduction
2,4,5-TP (Silvex) Reduction
2,4-D Reduction
Alachlor Reduction
Arsenic (Pentavalent)<=300 ppb Reduction
Arsenic (Pentavalent)<=50 ppb Reduction
Asbestos Reduction
Atrazine Reduction
Barium Reduction
Cadmium Reduction
Carbofuran Reduction
Chloropicrin Reduction
Chromium (Hexavalent) Reduction
Chromium (Trivalent) Reduction
Cis-1,2-Dichloroethylene Reduction
Cis-1,3-Dichloropropylene Reduction
Copper Reduction
Cyst Reduction
Dibromochloropropane Reduct.
Dinoseb Reduction
Ethylene Dibromide Reduction
Fluoride Reduction
Haloacetonitriles Reduction
Haloketones Reduction
Heptachlor Epoxide Reduction
Heptachlor Reduction
Hexachlorobutadiene Reduction
Hexachlorocyclopentadiene Reduction
Lead Reduction
Lindane Reduction
Methoxychlor Reduction
Nitrate/Nitrite Reduction
O-Dichlorobenzene Reduction
P-Dichlorobenzene Reduction
Pentachlorophenol Reduction
Radium 226/228 Reduction
Selenium Reduction
Styrene Reduction
TDS Reduction
Trans-1,2-Dichloroethylene Reduction
Tribromoacetic Acid Reduction
Trichloroethylene Reduction
Trihalomethanes (TTHM) Reduction
Turbidity Reduction
VOC Reduction
Xylenes Reduction
Reduction Claims for Shower Filtration Systems - Aesthetic Effects
Free Available Chlorine Reduction
Reduction Claims for Drinking Water Treatment Units - Emerging Compounds/Incidental Contaminants
Atenolol Reduction
Bisphenol A Reduction
Carbamazepine Reduction
DEET Reduction
Estrone Reduction
Ibuprofen Reduction
Linuron Reduction
Meprobamate Reduction
Metolachlor Reduction
Microplastics Reduction
Naproxen Reduction
Nonylphenol Reduction
Phenytoin Reduction
TCEP Reduction
TCPP Reduction
Trimethoprim Reduction
Product Type
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Complete Listings
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