St. Francois County, MO
The federal environmental record for St. Francois County (population 67,058): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
1
Superfund NPL sites
15
federal cleanup sites
1
PFAS-detecting water systems
2
TRI facilities
13
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Big River Mine Tailings/St. Joe Minerals Corp. | Desloge | on the NPL | 10/14/1992 |
Drinking water: PFAS testing
Public water systems serving St. Francois 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 |
|---|---|---|
| FARMINGTON PWS MO4010270 | PFHxS: 4.8 ng/L PFPeA: 3.8 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
2 facilities in St. Francois filed TRI reports for 2024, totalling 779 lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| MISSISSIPPI LIME CO LLC DBA MLC | BONNE TERRE | Lead And Lead Compounds | 767 lb |
| LEAD BELT MATERIALS CO INC | PARK HILLS | Polycyclic aromatic compounds | 12 lb |
Underground fuel tanks
EPA's UST Finder records 125 tank facilities in St. Francois: 76 tanks in service and 251 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 St. Francois 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 - $39All federal cleanup sites on file
The wider Superfund enterprise inventory (SEMS) for St. Francois, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- BIG RIVER HILLS LEAD TAILINGSBONNE TERRE
- BIG RIVER MINE TAILINGS/ST. JOE MINERALS CORP.DESLOGE
- BONNE TERRE MINE TAILINGSBONNE TERRE
- DOE RUN MINE TAILINGSDOE RUN
- ELVINS MINE TAILINGSELVINS
- FEDERAL MINE TAILINGSPARK HILLS
- HAYDEN CREEKIRONDALE
- IRON MOUNTAIN LAKE LEADBISMARCK
- LAKE TIMBERLINE BOARD OF TRUSTEES, INC.BONNE TERRE
- LEADWOOD MINE TAILINGSLEADWOOD
- NATIONAL MINE TAILINGSPARK HILLS
- PARK HILLS RAIL BALLASTSPARK HILLS
- ST FRANCOIS COUNTY GLADE PARKPARK HILLS
- ST. FRANCOIS STATE PARK CAMPGROUNDSBONNE TERRE
- TILLMAN HOUSEFARMINGTON