Mason County, MI
The federal environmental record for Mason County (population 29,159): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
1
Superfund NPL sites
5
federal cleanup sites
0
PFAS-detecting water systems
2
TRI facilities
48
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Mason County Landfill | Pere Marquette Township | deleted | 09/08/1983 |
Drinking water: PFAS testing
No public water system serving Mason 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)
2 facilities in Mason filed TRI reports for 2024, totalling 57k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| GREAT LAKES CASTINGS LLC | LUDINGTON | Manganese And Manganese Compounds, Lead | 29k lb |
| OCCIDENTAL CHEMICAL CORP | LUDINGTON | Ammonia | 28k lb |
Underground fuel tanks
EPA's UST Finder records 159 tank facilities in Mason: 54 tanks in service and 388 closed. 107 fuel releases are on record, of which 48 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Mason 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 Mason, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- BLUE RIBBON CLEANERSLUDINGTON
- MASON COUNTY LANDFILLLUDINGTON
- METALWORKS MERCURY SPILLLUDINGTON
- USCG OLD STATION LUDINGTONLUDINGTON
- USGS--LUDINGTON BIOLOGICAL STATIONLUDGINTON