WaterSense labeled flushometer-valve toilets, whether single- or dual-flush, use no more than 1.28 gpf, which is a 20 percent savings over the federal standard of 1.6 gpf. WaterSense has also included a minimum flush volume of 1.0 gpf to ensure plumbing systems have adequate flow to function effectively.
You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.- ws-background-fv-toilets-spec-comment-response (PDF)(27 pp, 343 K)
- ws-background-fv-toilets-comments (PDF)(79 pp, 14 MB)
- ws-background-fv-toilets-meeting-summary (PDF)(11 pp, 273 K)
- ws-background-fv-toilets-presentation (PDF)(32 pp, 714 K)
- ws-background-fv-toilets-coverletter (PDF)(2 pp, 145 K)
- ws-background-fv-toilets-draftspec (PDF)(7 pp, 231 K)
- ws-background-fv-toilets-suppstatement (PDF)(10 pp, 273 K)
- ws-background-fv-toilets-noi (PDF)(12 pp, 103 K)
- ws-background-fv-toilets-noi-webinar-summary (PDF)(12 pp, 148 K)
- ws-background-fv-toilets-noi-public-presentation (PDF)(43 pp, 273 K)