{"@context":"https://schema.org","@type":"Dataset","@id":"https://zipradar.org/topic/water-quality/89101/","name":"Water quality for ZIP 89101 — Las Vegas, NV","description":"Water quality data for ZIP 89101 (Las Vegas, Nevada), 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":"89101","city":"Las Vegas","state":"NV","stateFull":"Nevada","county":"Clark County","countySlug":"clark-county","geo":{"latitude":36.1699,"longitude":-115.1398}},"stateContext":{"topConcern":"Wildfire, water-supply (Colorado River allotment)","narrative":"Nevada's wildfire risk concentrates in the western Sierra foothills (Reno, Carson City, Lake Tahoe). Las Vegas water supply tied to declining Lake Mead Colorado River allotment. EPA SDWIS shows arsenic challenges in some rural systems."},"radonZone":null,"airQuality":null,"waterQuality":{"primary":{"pwsid":"NV0000090","name":"LAS VEGAS VALLEY WATER DISTRICT","populationServed":1539277,"waterSource":"SW","violations":{"windowYears":3,"total":0,"healthBased":0,"latest":null}},"systemCount":16,"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/89101/","zipDashboardUrl":"https://zipradar.org/zip/89101/","zipDashboardApiUrl":"https://zipradar.org/api/zip/89101/","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/89101/"}}