Proposed revisions to:
• NSF/ANSI 53: Drinking Water Treatment Units — Health Effects (53i164r1)
• NSF/ANSI 58: Reverse Osmosis Drinking Water Treatment Systems (58i112r1)
This ballot proposes adding optional nitrate influent levels to NSF/ANSI 53 and 58, so both standards allow
testing to one of three average influent challenge concentrations: 30 ± 10, 70 ± 10, or 110 ± 10 mg/L. |
