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NSF/ANSI 42
Drinking Water Treatment Units - Aesthetic Effects

A.O. Smith Corporation 
11270 West Park Place
Milwaukee, WI 53224 
United States 
877-333-7106 

Facility : # 1 Taiwan

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

Plumbed-In[Pb]
AO-IM AO-IM 2500 .5   Chlorine Reduction
Taste and Odor Reduction
AO-MF-B AO-MF-B-R 2000 2   Chlorine Reduction
Taste and Odor Reduction

   
[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.

Point-of-Entry [Pb] [POE]
AO-WH-PREV AO-WH-PREV-R2 (1) 6   Nominal Particulate Reduction, Class V

   
(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.
[POE] Product conforms to NSF/ANSI/CAN 61 health effects requirements.

COMPONENTS: Filter Cartridges[1]
AO-WH-PRE-RC2  
AO-WH-PRE-RCP2[Pb]  
AO-WH-PRE-RP2[Pb]  
AO-WH-PREL-R[Pb]  
AO-WH-PREL-RP[Pb]  

   
[1] Conforms to material requirements only.
[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.

COMPONENTS: Filter Cartridges, Point-of-Entry[1] [POE]
AO-WH-PREL-RC  

   
[1] Conforms to material requirements only.
[POE] Product conforms to NSF/ANSI/CAN 61 health effects requirements.

COMPONENTS: Filter Housings[2] [Pb]
AO-WH-PREL  
AO-WHE-PRE  

   
[2] Conforms to the material and structural integrity requirements only.
[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.

Number of matching Manufacturers is 1
Number of matching Products is 11
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