Monroe County, MI
The federal environmental record for Monroe County (population 155,045): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
1
Superfund NPL sites
11
federal cleanup sites
2
PFAS-detecting water systems
16
TRI facilities
103
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Novaco Industries | Temperance | deleted | 09/08/1983 |
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 |
|---|---|---|
| DUNDEE MI0001880 | PFOA: 13 ng/L | above final limit |
| FRENCHTOWN TOWNSHIP MI0002500 | PFBA: 9.8 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
16 facilities in Monroe filed TRI reports for 2024, totalling 4.7M lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| DTE ELECTRIC CO - MONROE POWER PLANT | MONROE | Barium And Barium Compounds, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 4.6M lb |
| GERDAU MACSTEEL MONROE | MONROE | Zinc compounds, Copper And Copper Compounds | 69k lb |
| GUARDIAN INDUSTRIES - CARLETON | CARLETON | Ammonia, Lead And Lead Compounds | 27k lb |
| PIONEER METAL FINISHING LLC | MONROE | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Nitric acid | 21k lb |
| ADVANCED HEAT TREAT CORP. | MONROE | Trichloroethylene, Ammonia | 11k lb |
| DTE ELECTRIC COMPANY-FERMI POWER PLANT | NEWPORT | Lead | 4k lb |
| NATIONAL GALVANIZING LP | MONROE | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Manganese | 3k lb |
| R J MARSHALL CO | ERIE | Antimony compounds, Zinc compounds | 2k lb |
| FCI MILAN | MILAN | Lead | 1k lb |
| JAYTEC LLC | MILAN | Manganese, Nickel | 820 lb |
| SPARTAN STEEL COATING | MONROE | Zinc compounds | 3 lb |
| HEIDTMAN STEEL PRODUCTS INC. | ERIE | Manganese, Copper | 0 lb |
| TAILOR WELDED BLANKS | MONROE | Manganese, Lead | 0 lb |
| MICHIGAN PAVING & MATERIALS CO - MONROE | MONROE | - | 0 lb |
| CADILLAC ASPHALT LLC | MONROE | Polycyclic aromatic compounds, Benzo[g,h,i]perylene | 0 lb |
| SUNRISE WINDOWS LTD | TEMPERANCE | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 379 tank facilities in Monroe: 249 tanks in service and 915 closed. 328 fuel releases are on record, of which 103 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 - $39All federal cleanup sites on file
The wider Superfund enterprise inventory (SEMS) for Monroe, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- AUTOMOTIVE COMPONENTS HOLDINGS, LLC - MONROE PLANTMONROE
- CONSOLIDATED PACKAGING CORPMONROE
- FORMER MOBIL TERMINALDUNDEE
- HIVON ROAD ABANDONED DRUM SITEEXETER
- MODERN PACKAGINGMONROE
- NOVACO INDUSTRIESTEMPERANCE
- PIPE SUPPLY COMPANYOTTAWA LAKE
- REDMAN BIOFUELS LLCMILAN
- SHM TOLEDO BEACH LLCLA SALLE
- US POSTAL SERVICEMONROE
- USANG TRAINING SITE - NEWPORTNEWPORT