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

Particulate Reduction: Class 1
Turbidity: >98%
Giardia & Cryptosporidium: >99.99%
Chlorine taste and odour (2ppm): >96%
Lead (150ppb) 99.2%