Illinois Environmental Protection Agency (IL)
Illinois's environmental agency: water quality, wetlands, waste and the permits that go with them.
Illinois Environmental Protection Agency
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What you can look up here
- Environmental conditionsContamination, tanks, spills, and permitted facilities near a site.
- WetlandsSee mapped wetlands and who to ask before filling or building near one.
- Lakes and waterLake depth maps, water quality, public access, and public waters status.
About this resource
- Provided by
- Illinois Environmental Protection Agency (official)
- Covers
- Illinois statewide
- Link status
- Opened normally at the last check
- Link checked
- Oct 13, 2026
- Web address
- https://epa.illinois.gov/
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