NSF Product and Service Listings

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Note: Certain claims, such as Arsenic (Pentavalent) Reduction, appear as active links, allowing you to access additional information regarding the specific contaminants.

NSF/ANSI 53
Drinking Water Treatment Units - Health Effects


A.O. Smith Corporation 
11270 West Park Place
Milwaukee, WI 53224 
United States 
800-527-1953 

Facility : Haltom City, TX

  Replacement Service Cycle Flow Rate  
Brand Name / Trade Name / Model Element (gallons) (gpm)   Claim

Plumbed-In to Separate Tap [Pb]
AO-US-100 AO-US-100-R 200 .5(1)   Asbestos Reduction
Cyst Reduction
Lead Reduction
MTBE Reduction
Mercury Reduction
Turbidity Reduction
VOC Reduction **
AO-US-200 AO-US-200-R 500 .5(1)   Asbestos Reduction
Cyst Reduction
Lead Reduction
MTBE Reduction
Mercury Reduction
Turbidity Reduction
VOC Reduction **
PFOA Reduction
PFOS Reduction
AOW-2000 AOW-2000R 500(1) .5   Asbestos Reduction
Cyst Reduction
Lead Reduction
MTBE Reduction
Mercury Reduction
PFOA Reduction
PFOS Reduction
Turbidity Reduction
VOC Reduction **
AOW-3000[2] AOW-3000-R 365(1) .8   Asbestos Reduction
Cyst Reduction
Lead Reduction
MTBE Reduction
Mercury Reduction
PFOA Reduction
PFOS Reduction
Turbidity Reduction
VOC Reduction **

   
(1) Claims of capacity or rated service cycle are not applicable for mechanical filtration.
[2] Model is a reverse osmosis system and is also Certified to NSF/ANSI Standard 58.
[Pb] Product also evaluated and determined to possess weighted average lead content of
     <=0.25% and complies with lead content requirements for “lead free” plumbing as defined
     by California, Vermont, Maryland, and Louisiana state laws and the U.S. Safe Drinking
     Water Act.

Refrigerator Filter [Pb]
AO-FF AO-US-100-R 200 .5(1)   Asbestos Reduction
Cyst Reduction
Lead Reduction
MTBE Reduction
Mercury Reduction
Turbidity Reduction
VOC Reduction **
PFOA Reduction
PFOS Reduction

   
(1) Claims of capacity or rated service cycle are not applicable for mechanical filtration.
[Pb] Product also evaluated and determined to possess weighted average lead content of
     <=0.25% and complies with lead content requirements for “lead free” plumbing as defined
     by California, Vermont, Maryland, and Louisiana state laws and the U.S. Safe Drinking
     Water Act.


NOTE: All replacement elements are components.

** The category of VOC (Volatile Organic Chemical) includes a number of chemicals that are both man-made and naturally occurring. Water from wells and utilities may contain some of these contaminants. Some VOCs are pesticides, herbicides, or insecticides that seep into the ground water after application. Other VOCs enter the water supply through industrial or other waste disposal. This category also includes total trihalomethanes, which are a by-product of chlorination.

A VOC reduction claim by the manufacturer means the system reduces the concentration of all of the following contaminants:

alachlor                      endrin                          simazine  
atrazine                      ethylbenzene                    styrene
benzene                       ethylene dibromide (EDB)        1,1,2,2-tetrachloroethane
carbofuran                    haloacetonitriles               tetrachloroethylene
carbon tetrachloride            bromochloroacetonitrile       toluene
chlorobenzene                   dibromoacetonitrile           2,4,5-TP(silvex)
chloropicrin                    dichloroacetonitrile          tribromoacetic acid
2,4-D                           trichloroacetonitrile         1,2,4-trichlorobenzene
dibromochloropropane (DBCP)   haloketones                     1,1,1-trichloroethane
o-dichlorobenzene               1,1-dichloro-2-propanone      1,1,2-trichloroethane
p-dichlorobenzene               1,1,1-trichloro-2-propanone   trichloroethylene 
1,2-dichloroethane            heptachlor                      trihalomethanes (TTHM)       
1,1-dichloroethylene          heptachlor epoxide                bromodichloromethane
cis-1,2-dichloroethylene      hexachlorobutadiene               bromoform
trans-1,2-dichloroethylene    hexachlorocyclopentadiene         chlorodibromomethane
1,2-dichloropropane           lindane                           chloroform
cis-1,3-dichloropropylene     methoxychlor                    xylenes                       
dinoseb                       pentachlorophenol
Number of matching Manufacturers is 1
Number of matching Products is 5
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