{"@context":"https://schema.org","@type":"Dataset","@id":"https://zipradar.org/topic/water-quality/60611/","name":"Water quality for ZIP 60611 — Chicago (Streeterville), IL","description":"Water quality data for ZIP 60611 (Chicago (Streeterville), Illinois), 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 CWS serving the address, any health-based violations in the last 3 years, most recent lead and copper sampling result, and a link to the primary SDWIS record.","limitations":"Where a ZIP is served by multiple water systems, zipradar shows the dominant CWS by population served and lists alternates. Private well water is not covered."},"place":{"zip":"60611","city":"Chicago (Streeterville)","state":"IL","stateFull":"Illinois","county":"Cook County","countySlug":"cook-county","geo":{"latitude":41.8954,"longitude":-87.621}},"stateContext":{"topConcern":"Lead service lines, flooding (Mississippi/Illinois)","narrative":"Illinois has the highest LCRR lead-service-line replacement obligations in the US (Chicago alone >400,000 LSLs). FEMA AE coverage extends along the Mississippi, Illinois, and Rock rivers. EPA SDWIS shows urban vs. downstate disparity."},"radonZone":null,"airQuality":null,"datePublished":"2026-04-24","dateModified":"2026-09-07","canonicalUrl":"https://zipradar.org/topic/water-quality/60611/","zipDashboardUrl":"https://zipradar.org/zip/60611/","zipDashboardApiUrl":"https://zipradar.org/api/zip/60611/","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/60611/"}}