In the state of California only the Doulton® HIP/Ultracarb NSF, HIP/Ultracarb Inline NSF, and Ultracarb NSF have been tested and certified for sale with the following performance claims:

Particulate Reduction: Class 1
Turbidity: >99.7%
Giardia & Cryptosporidium: >99.99%
Chlorine taste and odour (2ppm): >97%
Lead (150ppb) 98.3%