{"@context":"https://schema.org","@type":"Dataset","@id":"https://zipradar.org/topic/water-quality/19103/","name":"Water quality for ZIP 19103 — Philadelphia, PA","description":"Water quality data for ZIP 19103 (Philadelphia, Pennsylvania), 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":"19103","city":"Philadelphia","state":"PA","stateFull":"Pennsylvania","county":"Philadelphia County","countySlug":"philadelphia-county","geo":{"latitude":39.9522,"longitude":-75.1737}},"stateContext":{"topConcern":"Radon, lead pipes (older cities)","narrative":"Pennsylvania has Zone 1 radon across most of the state. LCRR lead-service-line obligations in Philadelphia, Pittsburgh, Reading, Allentown, Erie. EPA SDWIS small-system compliance varies."},"radonZone":null,"airQuality":null,"waterQuality":{"primary":{"pwsid":"PA1510001","name":"PHILADELPHIA WATER DEPARTMENT","populationServed":1600000,"waterSource":"SW","violations":{"windowYears":3,"total":3,"healthBased":0,"latest":{"date":"2026-03-01","healthBased":false,"category":"MR","contaminant":"0300"}}},"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/19103/","zipDashboardUrl":"https://zipradar.org/zip/19103/","zipDashboardApiUrl":"https://zipradar.org/api/zip/19103/","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/19103/"}}