Washington County, IL
The federal environmental record for Washington County (population 13,536): 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
1
PFAS-detecting water systems
4
TRI facilities
12
open tank releases
Drinking water: PFAS testing
Public water systems serving Washington 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 |
|---|---|---|
| WASHINGTON COUNTY WATER COMPANY IL1895600 | PFBA: 8.2 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
4 facilities in Washington filed TRI reports for 2024, totalling 6.7M lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| PRAIRIE STATE GENERATING CO | MARISSA | Zinc compounds, Barium And Barium Compounds | 6.7M lb |
| NASCOTE INDUSTRIES | NASHVILLE | n-Butyl alcohol, 1,2,4-Trimethylbenzene | 14k lb |
| PURINA ANIMAL NUTRITION LLC - NASHVILLE IL | NASHVILLE | - | 0 lb |
| ANTOLIN NASHVILLE | NASHVILLE | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 70 tank facilities in Washington: 38 tanks in service and 145 closed. 48 fuel releases are on record, of which 12 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Washington 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