Certification against NSF/ANSI Standards 40, 41, and 46, as well as Protocol P157, provides assurance to both public health officials and consumers that the residential wastewater treatment product listed meets current public health guidelines.
A list of NSF-certified wastewater systems for the Residential Wastewater Systems, Non-Liquid Treatment Systems, Electrical Incinerating Toilets, Septic Tank Effluent Filters, and Chlorine Disinfection Devices is available from the NSF online product database.
The following organizations also have general information on septic systems and other wastewater treatment issues.
