Monroe County, IL
The federal environmental record for Monroe County (population 34,957): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
0
Superfund NPL sites
0
federal cleanup sites
2
PFAS-detecting water systems
1
TRI facilities
13
open tank releases
Drinking water: PFAS testing
Public water systems serving Monroe with at least one PFAS detection under UCMR5. The federal limit for PFOA and PFOS is 4 ng/L; EPA proposed in May 2026 to rescind the limits for the other compounds, which are shown for information.
| System | Highest results | Reading |
|---|---|---|
| COLUMBIA IL1330050 | PFBA: 11.5 ng/L PFBS: 3.4 ng/L | detected |
| WATERLOO IL1330300 | PFBA: 16.9 ng/L PFPeA: 3.2 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
1 facilities in Monroe filed TRI reports for 2024, totalling 42k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| MOZEL COLUMBIA | COLUMBIA | Xylene (mixed isomers), Formaldehyde | 42k lb |
Underground fuel tanks
EPA's UST Finder records 80 tank facilities in Monroe: 50 tanks in service and 148 closed. 51 fuel releases are on record, of which 13 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Monroe as Zone 2, moderate predicted indoor radon (2 to 4 pCi/L average). Radon and air quality are covered in depth on lung.com.
The record for one specific address
County figures blur what matters: distance. The Address Environmental Report runs these same federal datasets against one address and reports every site, tank, polluter and water result around it, with distances, in about a minute.
Get the report - $39