Carlton County, MN
The federal environmental record for Carlton County (population 36,825): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
0
Superfund NPL sites
1
federal cleanup sites
1
PFAS-detecting water systems
3
TRI facilities
10
open tank releases
Drinking water: PFAS testing
Public water systems serving Carlton 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 |
|---|---|---|
| Cloquet MN1090005 | PFOS: 8.4 ng/L PFHxS: 8 ng/L | above final limit |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
3 facilities in Carlton filed TRI reports for 2024, totalling 936k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| SAPPI CLOQUET LLC | CLOQUET | Methanol, Hydrogen sulfide | 936k lb |
| CHEMSTAR PRODUCTS CO | CARLTON | Propylene oxide | 315 lb |
| USG INTERIORS LLC | CLOQUET | Lead compounds, Mercury compounds | 289 lb |
Underground fuel tanks
EPA's UST Finder records 154 tank facilities in Carlton: 104 tanks in service and 348 closed. 140 fuel releases are on record, of which 10 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Carlton 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 Carlton, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- FON DU LAC MERCURY SPILLCLOQUET