St. Clair County, MI
The federal environmental record for St. Clair County (population 159,874): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
0
Superfund NPL sites
6
federal cleanup sites
0
PFAS-detecting water systems
18
TRI facilities
144
open tank releases
Drinking water: PFAS testing
No public water system serving St. Clair reported a PFAS detection in the UCMR5 national testing round. Systems serving under 3,300 people were only sampled in part, so absence from this table is not proof of absence in the water.
Facilities reporting toxic releases (2024)
18 facilities in St. Clair filed TRI reports for 2024, totalling 1.6M lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| DTE ELECTRIC CO-BELLE RIVER POWER PLANT | CHINA TOWNSHIP | Barium And Barium Compounds, Vanadium compounds | 756k lb |
| INTERTAPE POLYMER GROUP | MARYSVILLE | Toluene, Zinc compounds | 663k lb |
| MAGNA ELECTRIC VEHICLE STRUCTURES | SAINT CLAIR | Certain glycol ethers, Diisocyanates | 55k lb |
| MUELLER BRASS CO | PORT HURON | Zinc compounds, Copper compounds | 17k lb |
| MARYSVILLE ETHANOL LLC | MARYSVILLE | Acetaldehyde, n-Hexane | 16k lb |
| KKSP PRECISION MACHINING | EAST CHINA | Dichloromethane | 15k lb |
| SUNSATION PRODUCTS INC | CLAY TOWNSHIP | Styrene, Methyl methacrylate | 11k lb |
| IAC PORT HURON LLC | PORT HURON | Diisocyanates | 11k lb |
| MICHIGAN METAL COATINGS | PORT HURON | Methanol, Manganese | 7k lb |
| ZF AXLE DRIVES MARYSVILLE | MARYSVILLE | Manganese, Ammonia | 4k lb |
| MUELLER IMPACTS CO | MARYSVILLE | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 2k lb |
| METALOR TECHNOLOGIES | PORT HURON | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Silver And Silver Compounds | 2k lb |
| SMR-AUTOMOTIVE SYSTEMS USA INC. | MARYSVILLE | Xylene (mixed isomers), Ethylbenzene | 956 lb |
| MICHIGAN METAL COATINGS PLANT 2 | PORT HURON | Manganese, Lead | 335 lb |
| WIRTZ MANUFACTURING CO INC PLANT 1 | PORT HURON | Lead And Lead Compounds | 3 lb |
| MID-TOWN PETROLEUM ACQUISTION LLC | PORT HURON | Polycyclic aromatic compounds | 0 lb |
| AURIA SOLUTIONS | SAINT CLAIR | - | 0 lb |
| AUTO ANODICS INC | PORT HURON | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 463 tank facilities in St. Clair: 308 tanks in service and 1,158 closed. 383 fuel releases are on record, of which 144 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps St. Clair as Zone 3, the lowest predicted indoor radon (under 2 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. Clair, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- CN TUNNEL DERAILMENT US SIDEPORT HURON
- PORT HURON SCHOOL DISTRICT MERCURY SPILLPORT HURON
- SMITHS CREEK RESIDENCEKIMBALL
- ST. CLAIR RESIDENTIAL MERCURY SPILLST. CLAIR
- USCG OLD STATION PT. HURON/FT GRATIOT LIGHTPORT HURON
- WITHERELL MERCURY SITEST. CLAIR