{"@context":"https://schema.org","@type":"Dataset","@id":"https://zipradar.org/topic/water-quality/49503/","name":"Water quality for ZIP 49503 — Grand Rapids, MI","description":"Water quality data for ZIP 49503 (Grand Rapids, Michigan), 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":"49503","city":"Grand Rapids","state":"MI","stateFull":"Michigan","county":"Kent County (MI)","countySlug":"kent-county","geo":{"latitude":42.9634,"longitude":-85.6681}},"stateContext":{"topConcern":"Lead pipes (post-Flint), Great Lakes erosion","narrative":"Michigan's LCRR obligations are among the heaviest in the US — Detroit, Flint, Benton Harbor, Lansing all carry significant lead-service-line replacement commitments. Great Lakes shoreline erosion expands FEMA AE zones in some lakefront counties."},"radonZone":null,"airQuality":null,"waterQuality":{"primary":{"pwsid":"MI0002790","name":"GRAND RAPIDS","populationServed":306901,"waterSource":"SW","violations":{"windowYears":3,"total":0,"healthBased":0,"latest":null}},"systemCount":14,"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/49503/","zipDashboardUrl":"https://zipradar.org/zip/49503/","zipDashboardApiUrl":"https://zipradar.org/api/zip/49503/","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/49503/"}}