Winnebago County, WI
The federal environmental record for Winnebago County (population 171,735): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
0
Superfund NPL sites
12
federal cleanup sites
0
PFAS-detecting water systems
30
TRI facilities
13
open tank releases
Drinking water: PFAS testing
No public water system serving Winnebago 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)
30 facilities in Winnebago filed TRI reports for 2024, totalling 789k lb released. The 25 largest by volume:
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| NEENAH FOUNDRY CO NEENAH OPERATIONS | NEENAH | Zinc (fume or dust), Manganese And Manganese Compounds | 494k lb |
| ESSITY PROFESSIONAL HYGIENE N.A. LLC | MENASHA | Hydrogen sulfide, Methanol | 166k lb |
| AMCOR PACKAGING INC | OSHKOSH | Ozone | 28k lb |
| BEMIS FILMS | OSHKOSH | Ozone | 27k lb |
| OSHKOSH DEFENSE LLC | OSHKOSH | Cobalt compounds, Certain glycol ethers | 25k lb |
| A P NONWEILER CO INC | OSHKOSH | Diisocyanates, Xylene (mixed isomers) | 14k lb |
| GALLOWAY CO | NEENAH | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 13k lb |
| ALLIANCE INDUSTRIES INC | MENASHA | 1,2,4-Trimethylbenzene | 10k lb |
| CRAFT COATING | OSHKOSH | Zinc compounds | 4k lb |
| HYDRITE CHEMICAL CO. | OSHKOSH | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Ammonia | 3k lb |
| FOX RIVER VALLEY ETHANOL LLC | OSHKOSH | n-Hexane | 3k lb |
| LAKESIDE PLASTICS INC | OSHKOSH | Diisononyl Phthalates (DINP), Lead compounds | 599 lb |
| ARROWHEAD CONVEYOR CORP | OSHKOSH | Chromium, Nickel | 584 lb |
| EGGERS DIV LLC - NEENAH | NEENAH | Lead | 579 lb |
| CREATIVE METAL PRODUCTS | NEENAH | Manganese | 260 lb |
| US PAPER MILLS CORP | MENASHA | Lead | 115 lb |
| MULTICIRCUITS INC. | OSHKOSH | Nitric acid, Copper compounds | 91 lb |
| PLEXUS CORP (NEENAH OPERATIONS) | NEENAH | Lead compounds | 21 lb |
| OSHKOSH DEFENSE LLC | OSHKOSH | Ethylene glycol | 10 lb |
| INTERTAPE POLYMER GROUP | MENASHA | Acrylamide | 9 lb |
| KINGSBURY INC OSHKOSH DIV | OSHKOSH | Copper, Lead | 7 lb |
| LAPHAM-HICKEY STEEL CORP | OSHKOSH | Manganese, Chromium | 3 lb |
| AZCO INC | NEENAH | Chromium | 3 lb |
| MUZA METAL PRODUCTS CORP | OSHKOSH | - | 0 lb |
| PIERCE MANUFACTURING INC | APPLETON | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 717 tank facilities in Winnebago: 310 tanks in service and 1,738 closed. 605 fuel releases are on record, of which 13 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Winnebago 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 Winnebago, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- (FORMER) DONALDSONS ONE HOUR CLEANERSNEENAH
- AMERICAN QUALITY FIBERSMENASHA
- BUTTE DES MORTS MERCURY SPILLBUTTE DES MORTS
- FOX VALLEY LAUNDRIESOSHKOSH
- KERRY LANE ERAPPLETON
- KIENAST & PAULUS QUARRIESOSHKOSH
- MENASHA SISTERS DUMPMENASH
- OSHKOSH BURNING RAIL CAROSHKOSH
- OSHKOSH FURNITURE LLCOSHKOSH
- OSHKOSH RICIN HOUSEOSHKOSH
- SHILOBRIT DRY CLEANER SITEOSHKOSH
- WPSC OSHKOSH MGPOSHKOSH