Portage County, WI
The federal environmental record for Portage County (population 71,024): 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
1
PFAS-detecting water systems
11
TRI facilities
8
open tank releases
Drinking water: PFAS testing
Public water systems serving Portage 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 |
|---|---|---|
| PLOVER WATERWORKS WI7500726 | PFBA: 7.5 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
11 facilities in Portage filed TRI reports for 2024, totalling 1.4M lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| MCCAIN FOODS USA INC | WISCONSIN RAPIDS | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Ammonia | 1.4M lb |
| STEEL KING INDUSTRIES INC | STEVENS POINT | Certain glycol ethers, Manganese | 13k lb |
| SILGAN CONTAINERS MANUFACTURING CORP | PLOVER | n-Butyl alcohol, Certain glycol ethers | 10k lb |
| WATER RENEWAL CENTER | STEVENS POINT | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 9k lb |
| FLINT HILLS RESOURCES PINE BEND LLC JUNCTION CITY TERMINAL | JUNCTION CITY | Propylene, n-Hexane | 5k lb |
| DONALDSON CO INC | STEVENS POINT | Diisocyanates, Manganese | 4k lb |
| ONLINE PACKAGING INC | PLOVER | Chlorine, Methanol | 142 lb |
| STEVENS POINT MILL | STEVENS POINT | Lead compounds | 49 lb |
| FELKER BROTHERS CORP | PLOVER | Chromium, Nickel | 5 lb |
| GAMBER JOHNSON | STEVENS POINT | - | 0 lb |
| OLDCASTLE LAWN & GARDEN | AMHERST JUNCTION | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 508 tank facilities in Portage: 156 tanks in service and 1,001 closed. 227 fuel releases are on record, of which 8 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Portage 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 Portage, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- WPSC STEVENS POINTSTEVENS POINT