{"@context":"https://schema.org","@type":"Dataset","@id":"https://zipradar.org/topic/water-quality/95014/","name":"Water quality for ZIP 95014 — Cupertino, CA","description":"Water quality data for ZIP 95014 (Cupertino, California), 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":"95014","city":"Cupertino","state":"CA","stateFull":"California","county":"Santa Clara County","countySlug":"santa-clara-county","geo":{"latitude":37.323,"longitude":-122.0322}},"stateContext":{"topConcern":"Wildfire (WUI), seismic, water-supply variability","narrative":"California carries the highest concentrated WUI wildfire risk in the US per USFS WHP, with FAIR Plan + non-renewal pressure intensifying since 2017 fires. FEMA NFHL coverage is strong; drinking-water systems vary from large urban (LADWP, EBMUD) to small disadvantaged community systems flagged in EPA SDWIS. Radon risk is mostly Zone 2-3."},"radonZone":null,"airQuality":null,"waterQuality":{"primary":{"pwsid":"CA4310014","name":"CITY OF SUNNYVALE","populationServed":157566,"waterSource":"SW","violations":{"windowYears":3,"total":0,"healthBased":0,"latest":null}},"systemCount":11,"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/95014/","zipDashboardUrl":"https://zipradar.org/zip/95014/","zipDashboardApiUrl":"https://zipradar.org/api/zip/95014/","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/95014/"}}