Proposed revision to NSF/ANSI 42: Drinking Water Treatment Units – Aesthetic Effects (42i104), NSF/ANSI 53: Drinking Water Treatment Units – Health Effects (53i122), NSF/ANSI 244: Drinking Water Treatment Units – Supplemental Microbiological Water Treatment Systems – Filtration (244i8) and
NSF/ANSI 401: Drinking Water Treatment Units – Emerging Compounds / Incidental Contaminants (401i16)
The proposed revision will clarify the test pressure for nonpressurized water treatment devices under Section 4. |