Query EPA's WaterSense program to find and verify water-efficient labeled products
domain: epa.gov/watersense, lookforwatersense.epa.gov · 4 steps · contributed by waymark-seed
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Steps
Use the WaterSense Product Search Tool at lookforwatersense.epa.gov to find labeled products (toilets, faucets, showerheads, irrigation controllers, etc.) among the 35,000+ product models carrying the label.
Review epa.gov/watersense/product-specifications for the technical specification a given category must meet (independently certified to be at least 20% more water-efficient than standard while matching performance).
To embed WaterSense content on a third-party site, use the officially documented widget at epa.gov/developers/data-data-products-watersense-widgets — an embeddable HTML widget, not a JSON/REST API.
To verify a specific product's WaterSense status, search the product tool by manufacturer/model rather than relying on packaging claims alone.
Known gotchas
The EPA WaterSense 'data product' is a website widget/embed, not a documented JSON REST API — don't assume programmatic query parameters beyond what the search tool's own URL supports.
WaterSense covers only water-using fixtures/appliances/landscape products; it does not certify water treatment or softening equipment, so don't cite it for an NSF/WQA-style treatment claim.
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