County page
Winnebago County
Winnebago County currently shows 0 Superfund sites, 116 imported facility profiles, and 331,768 lbs in loaded TRI releases.
Overview
What this county page is saying
This live county page is generated from the ingested EPA datasets. It merges ECHO facility compliance rows, TRI release totals, and any Superfund sites attached to Winnebago County.
The latest loaded TRI year is 2024, with 331,768 lbs in county-level on-site releases tied to the imported facility set.
Focus points
Design and product notes
County pages combine facility compliance history with chemical release totals.
TRI chemistry shows what is being reported, while ECHO shows who keeps drawing enforcement attention.
Superfund records add legacy cleanup context even when live contaminant detail is still sparse.
Superfund layer
Cleanup sites in this county
Facilities
Worst polluters and compliance pressure
Neenah Foundry Co - Plants 2 and 3 (w2179)
Significant Violation across 12 of the last 12 quarters in the imported ECHO record.
Pioneer Metal Finishing Corp - Oshkosh Div
Significant Violation across 12 of the last 12 quarters in the imported ECHO record.
University of Wisconsin Oshkosh
Violation Identified across 12 of the last 12 quarters in the imported ECHO record.
3m Company - Disposal
Violation Identified across 5 of the last 12 quarters in the imported ECHO record.
(former) Donaldsons One Hour Cleaners
Significant Violation across 12 of the last 12 quarters in the imported ECHO record.
Menasha Elect & Water Utilities
Violation Identified across 12 of the last 12 quarters in the imported ECHO record.
Neenah, City
Violation Identified across 12 of the last 12 quarters in the imported ECHO record.
Omro, Town
Violation Identified across 12 of the last 12 quarters in the imported ECHO record.
Rosendale Dairy Llc
Violation Identified across 12 of the last 12 quarters in the imported ECHO record.
Vinland, Town
Violation Identified across 12 of the last 12 quarters in the imported ECHO record.
Tc Transcontinental
Violation Identified across 10 of the last 12 quarters in the imported ECHO record.
Thistle Dairy Llc
Violation Identified across 10 of the last 12 quarters in the imported ECHO record.
Winneconne Wastewater Treatment Plant
Violation Identified across 10 of the last 12 quarters in the imported ECHO record.
Edgewood Shangrila Sanitary District
Violation Identified across 10 of the last 12 quarters in the imported ECHO record.
Fox Crossing Utilities
Violation Identified across 10 of the last 12 quarters in the imported ECHO record.
Island View Sanitary District
Violation Identified across 10 of the last 12 quarters in the imported ECHO record.
Menasha Sewage Collection System
Violation Identified across 10 of the last 12 quarters in the imported ECHO record.
Neenah Sewage Collection System
Violation Identified across 10 of the last 12 quarters in the imported ECHO record.
Riverlane Mhc
Violation Identified across 10 of the last 12 quarters in the imported ECHO record.
Galloway Co
Significant noncompliance across 9 of the last 12 quarters in the imported ECHO record.
| Chemical | Group | Facilities | Total pounds |
|---|---|---|---|
| Hydrogen sulfide | TRI-listed chemical | 1 | 153,049 lbs |
| Toluene | Volatile organic compound | 2 | 70,545 lbs |
| Ozone | TRI-listed chemical | 2 | 54,676 lbs |
| Certain glycol ethers | TRI-listed chemical | 3 | 12,144 lbs |
| 1, 2, 4-Trimethylbenzene | Volatile organic compound | 2 | 11,316 lbs |
| Methanol | TRI-listed chemical | 2 | 8,759 lbs |
| Diisocyanates | TRI-listed chemical | 3 | 8,372 lbs |
| Ammonia | TRI-listed chemical | 2 | 4,349 lbs |
| n-Hexane | TRI-listed chemical | 1 | 2,773 lbs |
| Xylene (mixed isomers) | Volatile organic compound | 2 | 2,405 lbs |
| Formic acid | TRI-listed chemical | 1 | 1,021 lbs |
| N, N-Dimethylformamide | TRI-listed chemical | 1 | 714 lbs |
| Tetrachloroethylene | TRI-listed chemical | 1 | 602 lbs |
| Zinc compounds | TRI-listed chemical | 4 | 485 lbs |
| Manganese | TRI-listed chemical | 4 | 257 lbs |
| Nitric acid | TRI-listed chemical | 3 | 80 lbs |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | Metals and metal compounds | 2 | 40 lbs |
| Diisononyl Phthalates (DINP) | TRI-listed chemical | 1 | 38 lbs |
| Lead compounds | Metals and metal compounds | 5 | 29 lbs |
| Nickel compounds | Metals and metal compounds | 1 | 28 lbs |
Violation pages
State-level violation context tied to this county
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Clean Air Act violations in Wisconsin
Wisconsin facilities in the imported ECHO data show air-program oversight, inspections, or noncompliance signals.
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Clean Water Act violations in Wisconsin
Wisconsin facilities in the imported ECHO data show water-permit pressure, inspections, or noncompliance signals.
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RCRA violations in Wisconsin
Wisconsin facilities in the imported ECHO data show hazardous-waste or RCRA oversight signals.