NSF Product and Service Listings

These NSF Official Listings are current as of Saturday, October 17, 2026 at 12:15 a.m. Eastern Time. Please contact NSF to confirm the status of any Listing, report errors, or make suggestions.

Alert: NSF is concerned about fraudulent downloading and manipulation of website text. Always confirm this information by clicking on the below link for the most accurate information: http://info.nsf.org/Certified/DWTU/Listings.asp?Standard=058&CompanyName=A%2EO%2E+Smith&

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

NSF/ANSI 58
Reverse Osmosis Drinking Water Treatment Systems


 
A.O. Smith Su Teknolojileri A.S. 
Ikitelli O.S.B.Mh.Marmara D Blok Sk.
No:2-3, Küçükçekmece-Ikitelli 
34303 Istanbul 
Turkey 
90 212 444 1646
Visit this company's website

Facility : # 3 China

             

COMPONENTS: RO Membrane[1] [2]
RO-1812-50    
RO-1812-75    
RO-2012-100    
RO-2012-150    
RO-2812-200    
RO-3012-300    
RO-3012-400    

   
[1] Certified to Standard 58, material requirements only. At temperatures below 45°C,  pH
    value 3 ~ 8, flushing at least 48 hours.
[2] TF-XXYY-ZZ
    XX - Membrane element diameter in inches
         18 - 1.8"
         20 - 2.0"
         28 - 2.8"
         30 - 3.0"
    YY - Membrane element length in inches (12")
    ZZ - Permeated flow in gallons per day (GPD) (50, 75, 100, 150, 200, 300 or 400)


 
A.O. Smith Water Treatment (North American), Inc. 
1900 Prospect Court
Appleton, WI 54914 
United States 
800-777-1426 
920-739-9401

Facility : # 1 USA

  Replacement   Daily Production  
Brand Name / Trade Name / Model Module   Rate (gpd)   Claim

Plumbed-In to Separate Tap [Pb]
AORO-50 S1448RS   11   Arsenic (Pentavalent)<=300 ppb Reduction*
Barium Reduction
Cadmium Reduction
Chromium (Hexavalent) Reduction
Chromium (Trivalent) Reduction
Copper Reduction
Fluoride Reduction
Lead Reduction
Nitrate/Nitrite Reduction
Radium 226/228 Reduction
Selenium Reduction
TDS Reduction

   
* This product is intended for use only on water supplies that have been shown to be at or
  below the referenced concentration and valency of arsenic.
[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 2
Number of matching Products is 8
Processing time was 0 seconds