Illinois Environmental Protection Agency

Illinois EPA registry of Site Remediation Program No Further Remediation letters, aggregated to one row per site and joined to site location data, with engineered-barrier and institutional-control indicators.

Illinois EPA Office of Emergency Response incident tracker layer, including incident type and status, released material and amount, location, responsible party, responders, dates, and response actions.

Illinois EPA Bureau of Water ArcGIS layer of NPDES permitted facilities and discharge outfalls, including permit, activity, facility, industry, status, watershed, and coordinates.

Illinois EPA brownfields inventory of redevelopment and assessment sites, including program identifiers, property location, funding and investigation details, completion date, acreage, and contaminant category.

Illinois EPA bulk export of active and inactive voluntary remediation projects enrolled in the Pre-Notice Site Cleanup Program and Site Remediation Program.

Illinois EPA public inventory of active permitted landfill facilities, with agency site identifier, facility name, address, county, ZIP code, and coordinates.

Illinois EPA statewide ArcGIS layer of leaking underground storage tank incidents, including site identifiers, location, responsible project contacts, and resolution-related dates.

Illinois EPA statewide ArcGIS inventory of active, post-closure, certified post-closure, voluntary-remediation, state-sites, and unknown-status landfill locations.

Illinois EPA entry-point-level PFAS sampling results from its statewide investigation of community water supplies, including measured analytes, detection indicators, units, water-system identifiers, and coordinates.