{"@context":"https://schema.org","@type":"Dataset","@id":"https://zipradar.org/topic/water-quality/85701/","name":"Water quality for ZIP 85701 — Tucson, AZ","description":"Water quality data for ZIP 85701 (Tucson, Arizona), 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":"85701","city":"Tucson","state":"AZ","stateFull":"Arizona","county":"Pima County","countySlug":"pima-county","geo":{"latitude":32.2226,"longitude":-110.9747}},"stateContext":{"topConcern":"Radon, wildfire-WUI, water rights","narrative":"Arizona has Zone 1 radon risk across most of its area per EPA's 1993 map. FEMA NFHL coverage is dense in flood-prone Maricopa + Pima counties; wildfire risk concentrates in Yavapai + Coconino + Cochise. Water-rights and utility-source diversity (CAP allotments vs. local groundwater) varies significantly between metros."},"radonZone":null,"airQuality":null,"waterQuality":{"primary":{"pwsid":"AZ0410112","name":"TUCSON CITY OF","populationServed":732906,"waterSource":"GW","violations":{"windowYears":3,"total":26,"healthBased":0,"latest":{"date":"2026-01-01","healthBased":false,"category":"MR","contaminant":"2378"}}},"systemCount":143,"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/85701/","zipDashboardUrl":"https://zipradar.org/zip/85701/","zipDashboardApiUrl":"https://zipradar.org/api/zip/85701/","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/85701/"}}