Field studies have shown bath and shower diverter leak rates averaging three to eight times the leak rate allowed by the current standard. In some cases, the studies identified leaks of up to 3.0 gpm, which is more than the flow rate from a typical showerhead.
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ws-products-bath-and-shower-diverter-noi-updated (PDF)(12 pp, 501 K)
To improve the water efficiency of bath and shower diverters and raise consumer and business awareness about eliminating water and energy waste in this product category, WaterSense intends to develop a specification for labeling water-efficient bath and shower diverters.
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ws-products-bath-and-shower-diverter-noi-public-meeting-webinar-summary (PDF)(11 pp, 324 K)
Bath and shower diverter NOI summary.
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ws-proudcts-bath-and-shower-diverter-public-meeting-presentation (PDF)(44 pp, 3 MB)
Bath and shower diverters can leak water through the tub spout when the entire flow should be diverted to the showerhead.
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ws-products-bath-and-shower-diverter-noi-comments (PDF)(14 pp, 210 K)
Comments on WaterSense notice of intent (NOI) to develop a draft specification for bath and shower diverters.
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ws-products-bath-and-shower-diverter-research-proposal (PDF)(2 pp, 229 K)
Bath and shower diverter general test setup and methodology.
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ws-products-bath-and-shower-noi-public-comment-compilation (PDF)(18 pp, 408 K)
Comments on WaterSense notice of intent (NOI) to develop a draft specification for bath and shower diverters.