{"atlasHref":"/atlas?mode=drinking","datasetPath":"/data/research/drinking-water-evidence-coverage.json","effectivePeriod":{"end":"2026-06-30","start":"2026-04-01"},"keyResult":{"activeCommunitySystems":49368,"withAllThree":9553,"withLeadCopper":47683,"withServiceArea":43123,"withUcmr5":9953},"limitations":["Availability measures evidence coverage, not water quality.","Service-area availability is not an address-level utility guarantee."],"methodology":"Count each system once for each evidence family; availability is not water condition or compliance.","question":"How often do active community systems have UCMR5, lead/copper, and published service-area evidence in the current Water Around product?","researchId":"drinking-water-evidence-coverage","route":"/research/drinking-water-evidence-coverage","sourceFamilies":["EPA_ECHO_SDWIS","EPA_UCMR5"],"title":"How drinking-water evidence coverage varies across U.S. community water systems","universe":"49,368 active community water systems in the EPA ECHO/SDWIS 2026 Q2 snapshot"}