In summary of the letter received the White Knight has been categorized by NSF International as simply an onsite treatment system component not covered by the scope of Standard 40 or for that fact any other NSF/ANSI Standard currently in place.

Knight Treatment Systems and NSF International are working together to develop an NSF/ANSI Protocol that would be applicable to the methodology of the Enhanced Biological Augmentation of Onsite Wastewater Treatment Systems. Updates will be posted as they are developed.

Original Letter Available Here