NSF Product and Service Listings

These NSF Official Listings are current as of Monday, December 8, 2025 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=042&Company=C0332313&

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

NSF/ANSI 42
Drinking Water Treatment Units - Aesthetic Effects

 
Carbon Block Technology 
7251 Cathedral Rock Drive
Las Vegas, NV 89128 
United States 
702-360-8880
Visit this company's website

Facility : # 2 USA

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

Plumbed-In to Separate Tap [Pb]
CB-AS CBTAS[1] 600 1   Chloramine Reduction
Chlorine Reduction
Nominal Particulate Reduction, Class I
Taste and Odor Reduction
CB-VOC CBTVOC[1] 750[1] .75   Chloramine Reduction
Chlorine Reduction
Nominal Particulate Reduction, Class I
Taste and Odor 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.


Facility : Las Vegas, NV

 
           

COMPONENTS: Filter Cartridges[1] [Pb]
CB CTO[2]  
CB SUBM[3]  
CB SUBMPb[4]  
HVS400  

   
[1] Conforms to the material requirements only.
[2] CB10CTO2.5, CB10CTO4.5, CB20CTO2.5, CB20CTO4.5
[3] CB10SUBM2.5, CB10SUBM4.5, CB20SUBM2.5, CB20SUBM4.5
[4] CB10SUBMPB2.5, CB10SUBMPB4.5, CB20SUBMPB2.5, CB20SUBMPB4.5
[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 6
Processing time was 0 seconds