{"@context":"https://schema.org","@type":"Dataset","@id":"https://zipradar.org/topic/water-quality/40202/","name":"Water quality for ZIP 40202 — Louisville, KY","description":"Water quality data for ZIP 40202 (Louisville, Kentucky), sourced from EPA SDWIS.","topic":{"slug":"water-quality","label":"Water quality","source":"EPA SDWIS","sourceUrl":"https://www.epa.gov/ground-water-and-drinking-water/safe-drinking-water-information-system-sdwis-federal-reporting","refreshCadence":"Quarterly (federal mandate)","summary":"Pages show the largest community water system on record for the ZIP's county, its PWSID and population served, and its health-based and total violations in the last 3 years. Lead and copper sampling results are not shown; your utility's annual water quality report (CCR) has them.","limitations":"Where a county has several water systems, zipradar shows the one serving the most people and says how many others are on record; yours may be a different one. Private well water is not covered."},"place":{"zip":"40202","city":"Louisville","state":"KY","stateFull":"Kentucky","county":"Jefferson County","countySlug":"jefferson-county","geo":{"latitude":38.2541,"longitude":-85.7632}},"stateContext":{"topConcern":"Mining-affected water, flood (Ohio + tributaries)","narrative":"Kentucky's Appalachian eastern counties face mining-affected water systems with elevated EPA SDWIS compliance risk. Ohio River + tributary FEMA AE zones expose Louisville, Owensboro, and Newport. Radon risk varies by karst geology."},"radonZone":null,"airQuality":null,"waterQuality":{"primary":{"pwsid":"KY0560258","name":"LOUISVILLE WATER COMPANY","populationServed":806997,"waterSource":"SW","violations":{"windowYears":3,"total":0,"healthBased":0,"latest":null}},"systemCount":1,"caveat":"This is federal SDWIS reporting data for the community water system serving this county, not an address-level test result. Private well water is never covered by SDWIS. Where a county is served by multiple systems, this shows the one serving the most people."},"datePublished":"2026-04-24","dateModified":"2026-09-24","canonicalUrl":"https://zipradar.org/topic/water-quality/40202/","zipDashboardUrl":"https://zipradar.org/zip/40202/","zipDashboardApiUrl":"https://zipradar.org/api/zip/40202/","primarySourceUrl":"https://www.epa.gov/ground-water-and-drinking-water/safe-drinking-water-information-system-sdwis-federal-reporting","license":{"content":"CC-BY-4.0","attribution":"zipradar.org — https://zipradar.org/topic/water-quality/40202/"}}