{"@context":"https://schema.org","@type":"Dataset","@id":"https://zipradar.org/topic/water-quality/50266/","name":"Water quality for ZIP 50266 — West Des Moines (IA), IA","description":"Water quality data for ZIP 50266 (West Des Moines (IA), Iowa), 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":"50266","city":"West Des Moines (IA)","state":"IA","stateFull":"Iowa","county":"Polk County (IA)","countySlug":"polk-county","geo":{"latitude":41.5772,"longitude":-93.7115}},"stateContext":{"topConcern":"Radon Zone 1, agricultural water nitrates","narrative":"Iowa is one of the highest-radon states in the US — uniformly Zone 1. Agricultural runoff drives EPA SDWIS nitrate violations in small rural systems and even Des Moines Water Works. Tornadoes peak April-June."},"radonZone":null,"airQuality":null,"waterQuality":{"primary":{"pwsid":"IA7727031","name":"DES MOINES WATER WORKS","populationServed":246055,"waterSource":"SW","violations":{"windowYears":3,"total":0,"healthBased":0,"latest":null}},"systemCount":37,"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/50266/","zipDashboardUrl":"https://zipradar.org/zip/50266/","zipDashboardApiUrl":"https://zipradar.org/api/zip/50266/","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/50266/"}}