{"@context":"https://schema.org","@type":"Dataset","@id":"https://zipradar.org/topic/water-quality/37919/","name":"Water quality for ZIP 37919 — Knoxville, TN","description":"Water quality data for ZIP 37919 (Knoxville, Tennessee), 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":"37919","city":"Knoxville","state":"TN","stateFull":"Tennessee","county":"Knox County","countySlug":"knox-county","geo":{"latitude":35.9606,"longitude":-83.9207}},"stateContext":{"topConcern":"Tornadoes, flood (TVA tributaries), karst sinkholes","narrative":"Tennessee carries inland FEMA AE zones along TVA-managed Tennessee, Cumberland, Holston rivers. Karst geology creates documented sinkhole risk in middle TN. Tornado risk concentrates in Memphis + Jackson + Nashville corridors."},"radonZone":null,"airQuality":null,"waterQuality":{"primary":{"pwsid":"TN0000366","name":"KNOXVILLE UTILITIES BOARD - KUB","populationServed":254671,"waterSource":"SW","violations":{"windowYears":3,"total":0,"healthBased":0,"latest":null}},"systemCount":6,"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/37919/","zipDashboardUrl":"https://zipradar.org/zip/37919/","zipDashboardApiUrl":"https://zipradar.org/api/zip/37919/","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/37919/"}}