The ArrowMAX 1.0, ArrowMAX 1.2, ArrowMAX 2.0, Eco UV 1.0 and Wanderer 2.0 systems are certified by IAPMO R&T against NSF/ANSI 55 Class “B” for the supplemental bacterial treatment of disinfected public drinking water or other drinking water that has been tested and deemed acceptable for human consumption by the state or local health agency having jurisdiction. The systems are only designed to reduce normally occurring non-pathogenic nuisance microorganisms. Class “B” systems are not intended for treatment of contaminated water. They are certified by IAPMO R&T.