Clark County, WI
The federal environmental record for Clark County (population 34,774): 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
0
PFAS-detecting water systems
8
TRI facilities
11
open tank releases
Drinking water: PFAS testing
No public water system serving Clark 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)
8 facilities in Clark filed TRI reports for 2024, totalling 394k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| LYNN DAIRY/LYNN PROTEINS | GRANTON | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 353k lb |
| GRASSLAND DAIRY PRODUCTS INC | GREENWOOD | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Nitric acid | 37k lb |
| GREENWOOD MILK PRODUCTS | GREENWOOD | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Nitric acid | 5k lb |
| CUMMINS FILTRATION-NEILLSVILLE EAST | NEILLSVILLE | Diisocyanates | 12 lb |
| KERRY INC | OWEN | Nitric acid | 5 lb |
| HENRY G MEIGS | ABBOTSFORD | Polycyclic aromatic compounds | 0 lb |
| ALL METAL STAMPING INC. | ABBOTSFORD | - | 0 lb |
| COMMODORE HOMES LLC DBA MIDCOUNTRY HOMES | DORCHESTER | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 350 tank facilities in Clark: 103 tanks in service and 634 closed. 158 fuel releases are on record, of which 11 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Clark 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 Clark, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- OWEN RESIDENTIAL HG SPILLOWEN