Cass County, MI
The federal environmental record for Cass County (population 51,642): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
1
Superfund NPL sites
3
federal cleanup sites
0
PFAS-detecting water systems
7
TRI facilities
36
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| U.S. Aviex | Howard Township | on the NPL | 09/08/1983 |
Drinking water: PFAS testing
No public water system serving Cass 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)
7 facilities in Cass filed TRI reports for 2024, totalling 38k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| POSTLE EXTRUSIONS | CASSOPOLIS | Xylene (mixed isomers) | 38k lb |
| MERCURY DISPLACEMENT INDUSTRIES INC. | EDWARDSBURG | Mercury | 1 lb |
| AUTOCAM | DOWAGIAC | Lead | 1 lb |
| MIDWEST TIMBER INC | EDWARDSBURG | - | 0 lb |
| MENNEL MILLING CO OF MICHIGAN | DOWAGIAC | - | 0 lb |
| MICHIGAN DIE CASTINGS | DOWAGIAC | - | 0 lb |
| MENNEL MILLING CO OF MICHIGAN | DOWAGIAC | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 196 tank facilities in Cass: 76 tanks in service and 439 closed. 94 fuel releases are on record, of which 36 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Cass as Zone 1, the highest predicted indoor radon levels (over 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 Cass, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- ICG DOWAGIACDOWAGIAC
- MDI HG SITEEDWARDSBURG
- U.S. AVIEXNILES