Proposed revisions to NSF/ANSI 42: Drinking Water Treatment Units – Aesthetic Effects, NSF/ANSI 53: Drinking Water Treatment Units – Health Effects, NSF/ANSI 244: Drinking Water Treatment Units – Supplemental Microbiological Water Treatment Systems – Filtration, and NSF/ANSI 401: Drinking Water Treatment Units – Emerging Compounds / Incidental Contaminants.
The proposed revision will provide clarification on how systems shall be tested with and without adsorptive or absorptive media for replacement elements under exposure testing in section 4.2.3.5. The proposed language incorporates comments received during the initial straw ballot that was sent on August 3rd. |
