Washington County, WI
The federal environmental record for Washington County (population 138,168): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
1
Superfund NPL sites
6
federal cleanup sites
4
PFAS-detecting water systems
26
TRI facilities
12
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Omega Hills North Landfill | Germantown | deleted | 09/21/1984 |
Drinking water: PFAS testing
Public water systems serving Washington 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 |
|---|---|---|
| HARTFORD WATERWORKS, WI WI2670110 | PFOA: 6.8 ng/L PFHxS: 6.1 ng/L PFOS: 5.5 ng/L | above final limit |
| KEWASKUM WATERWORKS WI2670112 | PFOA: 15 ng/L PFBS: 6.6 ng/L | above final limit |
| WEST BEND WATERWORKS WI2670120 | PFOA: 6.5 ng/L PFBS: 3.9 ng/L | above final limit |
| SLINGER WATER UTILITY WI2670116 | PFPeA: 7 ng/L PFHxS: 5.7 ng/L PFHxA: 4.8 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
26 facilities in Washington filed TRI reports for 2024, totalling 127k lb released. The 25 largest by volume:
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| STERLING WISCONSIN LLC | GERMANTOWN | Methanol, Toluene | 41k lb |
| REGAL WARE WEST BEND | WEST BEND | Aluminum oxide (fibrous forms), Nickel | 33k lb |
| HAWK RESEARCH LABORATORIES LLC | WEST BEND | Xylene (mixed isomers), Toluene | 20k lb |
| SERIGRAPH INC | WEST BEND | Mixture | 13k lb |
| CUSTOM PAK PRODUCTS LLC | GERMANTOWN | Xylene (mixed isomers), Ethylbenzene | 7k lb |
| BROAN-NUTONE LLC | HARTFORD | Certain glycol ethers | 6k lb |
| RESINLAB KITPACKERS | GERMANTOWN | Nonylphenol, Diisocyanates | 3k lb |
| EH WOLF & SONS INC-SLINGER FACILITY | SLINGER | Methanol, Toluene | 2k lb |
| DSM FOOD SPECIALTIES USA INC. | GERMANTOWN | Ammonia, Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 1k lb |
| BARTON SOLVENTS INC. WEST BEND | WEST BEND | Toluene, Xylene (mixed isomers) | 854 lb |
| SCHREIBER FOODS | WEST BEND | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 298 lb |
| METALCRAFT OF MAYVILLE | WEST BEND | Manganese, Lead And Lead Compounds | 157 lb |
| SIGNICAST LLC HARTFORD MANUFACTURING COMPLEX | HARTFORD | Chromium, Manganese | 153 lb |
| FT MANUFACTURING CORP | WEST BEND | Chromium, Nickel | 40 lb |
| BOYD CORP | ALLENTON | Copper, Lead | 13 lb |
| RHEOCAST CO | GERMANTOWN | Copper | 12 lb |
| STEEL CRAFT CORP. OF WI | HARTFORD | Manganese | 5 lb |
| MAYSTEEL LLC | ALLENTON | Chromium | 3 lb |
| MGS | GERMANTOWN | - | 0 lb |
| KERRY INGREDIENTS | JACKSON | - | 0 lb |
| BRADLEY CORP | GERMANTOWN | Chromium, Nickel | 0 lb |
| WEASLER ENGINEERING INC | KEWASKUM | - | 0 lb |
| SYSTEMS LLC | GERMANTOWN | - | 0 lb |
| SUNLITE PLASTICS | GERMANTOWN | - | 0 lb |
| GEHL FOODS LLC | GERMANTOWN | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 566 tank facilities in Washington: 284 tanks in service and 1,186 closed. 359 fuel releases are on record, of which 12 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Washington 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 Washington, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- A & W IRON AND METALKEWASKUM
- NATIONWIDE RECYCLING LLCWEST BEND
- NIPHOSSLINGER
- PRAEFKE BRAKE & SUPPLY CORPWEST BEND
- WASHINGTON COUNTY HIGHWAY W LANDFILLSTOWN OF WAYNE
- WEST BEND PLATINGWEST BEND