FACTANKER / Environmental compliance / Wisconsin Environmental compliance
Environmental compliance in Wisconsin 30,774 active EPA-regulated sites in Wisconsin: 1,538 with an identified violation, 148 in significant violation, $105.9 million in penalties over five years — EPA ECHO, as of October 18, 2026, by county and facility.
How many facilities in Wisconsin are regulated by the EPA, and how many are in violation (as of October 18, 2026)? Measure Value Active EPA-regulated sites 30,774 Sites with an identified violation 1,538 Sites in significant violation 148 Inspections and evaluations, last 5 years 3,308 Formal enforcement actions, last 5 years 1,216 Penalties, last 5 years (shared federal cases once) $105.9 million
How many active facilities in Wisconsin fall under each EPA program? A facility can be in several programs.
Program Active sites Air (Clean Air Act) 979 Water discharge permits (Clean Water Act, NPDES) 8,332 Hazardous waste (RCRA) 14,505 Drinking water systems (SDWA) 8,445 Toxics Release Inventory reporters 847 Greenhouse gas reporters (GHGRP) 112
Which counties in Wisconsin have the most facilities in significant violation of EPA rules? County Active sites In violation Significant violation Penalties, 5 years Brown County 1,249 53 13 $5.7 million Milwaukee County 2,746 49 11 $14.7 million Marathon County 831 46 8 $5.8 million Dane County 1,898 55 7 $6.5 million Outagamie County 911 32 5 $887,400 Rock County 658 31 5 $407,312 Waukesha County 2,191 47 4 $6.4 million Winnebago County 795 32 4 $5.5 million Walworth County 633 28 4 $28,458 La Crosse County 552 21 4 $6.2 million Chippewa County 490 14 4 $0 Manitowoc County 430 29 4 $85.2 million Waupaca County 327 24 4 $0 Columbia County 326 26 4 $1.1 million Oconto County 289 23 4 $0 Grant County 257 44 4 $0 Ashland County 177 11 4 $670 Racine County 773 39 3 $28,852 Sheboygan County 646 33 3 $5.3 million Douglas County 468 19 3 $12,000 Wood County 458 29 3 $271,377 Vernon County 164 15 3 $0 Kenosha County 694 34 2 $5.9 million Ozaukee County 575 33 2 $108,730 Eau Claire County 486 11 2 $0 Sauk County 368 28 2 $5.3 million Pierce County 263 15 2 $0 Clark County 233 17 2 $0 Calumet County 232 17 2 $0 Sawyer County 230 11 2 $0 Burnett County 230 8 2 $0 Green Lake County 154 11 2 $0 Green County 154 17 2 $1,200 Rusk County 151 11 2 $0 Washington County 729 27 1 $0 Fond du Lac County 446 35 1 $0 Jefferson County 435 18 1 $5.3 million Dodge County 431 36 1 $30,000 Barron County 409 24 1 $5.3 million Polk County 385 12 1 $0 Marinette County 330 50 1 $5.5 million Shawano County 273 18 1 $75,000 Juneau County 229 17 1 $5,800 Bayfield County 217 18 1 $0 Jackson County 162 17 1 $8,230 Iowa County 154 24 1 $5.3 million Lincoln County 148 11 1 $733 Price County 145 9 1 $0 Richland County 108 12 1 $0 Lafayette County 95 16 1 $0 St. Croix County 624 13 0 $5.3 million Door County 493 54 0 $0 Vilas County 420 9 0 $5,000 Oneida County 407 12 0 $5.4 million Portage County 370 16 0 $5.4 million Waushara County 281 16 0 $0 Monroe County 266 17 0 $42,216 Dunn County 260 12 0 $0 Trempealeau County 217 18 0 $0 Washburn County 179 9 0 $170,720 Adams County 179 7 0 $30,058 Marquette County 171 13 0 $0 Kewaunee County 165 22 0 $0 Langlade County 154 12 0 $1,466 Buffalo County 125 6 0 $0 Crawford County 117 11 0 $0 Taylor County 116 5 0 $0 Iron County 88 8 0 $0 Forest County 80 9 0 $0 Pepin County 54 4 0 $0 Florence County 42 3 0 $0 Menominee County 25 1 0 $0
Which large facilities in Wisconsin are in significant violation of EPA rules? Facility Compliance status Quarters in violation (of 12) Penalties, 5 years AHLSTROM MOSINEE LLC Mosinee, WI Significant Violation 12 $150,000 CARMEUSE LIME & STONE MANITOWOC OPERATION Manitowoc, WI Significant Violation 12 $20,000 HYDRITE CHEMICAL CO. Cottage Grove, WI Significant Violation 12 – ASSOCIATED MILK PRODUCERS JIM FALLS DIV Jim Falls, WI Significant Violation 12 – GRAYMONT WESTERN LIME GREEN BAY Green Bay, WI Significant Violation 12 – WE ENERGIES ROTHSCHILD BIOMASS COGENERATION FACILITY Rothschild, WI Significant Violation 12 – GRAYMONT (WI) LLC Superior, WI Significant Violation 12 – MARTH WOOD SHAVINGS SUPPLY INC Marathon, WI Significant Violation 12 – MID-AMERICA STEEL DRUM CO INC Saint Francis, WI Significant Violation 12 – 3M WAUSAU - GREYSTONE PLANT Wausau, WI Significant Violation 12 – PLYMOUTH FOAM INC Plymouth, WI Significant Violation 12 – BROWNTOWN FOUNDRY LLC Browntown, WI Significant Violation 12 – WRR ENVIRONMENTAL SERVICES Eau Claire, WI Significant Violation 12 – NEENAH FOUNDRY CO - PLANTS 2 AND 3 Neenah, WI Significant Violation 12 – UNIROYAL GLOBAL ENGINEERED PRODUCTS LLC Stoughton, WI Significant Violation 12 – PIONEER METAL FINISHING CORP - OSHKOSH DIV Oshkosh, WI Significant Violation 12 – 3M CO - WAUSAU DOWNTOWN Wausau, WI Significant Violation 12 – MILWAUKEE METRO SEW DIST COMBI Milwaukee, WI Significant Violation 11 – WESTERN RACINE COUNTY SEWERAGE DISTRICT Rochester, WI Significant Violation 11 – WATER QUALITY CENTER Wisconsin Rapids, WI Significant Violation 10 $271,377 SUPERIOR REFINERY CO. Superior, WI Significant Violation 10 – GENERAC POWER SYSTEMS Whitewater, WI Significant Violation 10 – DOMTAR A. W. LLC-NEKOOSA Nekoosa, WI Significant Violation 9 – OAK CREEK POWER PLANT Oak Creek, WI Significant Violation 9 – BEMIS MANUFACTURING Sheboygan Falls, WI Significant Violation 8 $2,500 GEORGIA PACIFIC CONSUMER PRODUCTS LP Green Bay, WI Significant Violation 8 – MANITOWOC WWTP Manitowoc, WI Significant Violation 8 – CASCADES TISSUE GROUP WISCONSIN INC Eau Claire, WI Significant Violation 8 – APPLETON COATED LLC, COMBINED LOCKS MILL Combined Locks, WI Significant Violation 8 – KIMBERLY CLARK CORP Marinette, WI Significant Violation 7 – MONROE WASTEWATER TREATMENT FACILITY Monroe, WI Significant Violation 7 – CITY BREWING COMPANY, LLC La Crosse, WI Significant Violation 7 – APPLETON COATED LLC - COMBINED LOCKS MILL Combined Locks, WI Significant Violation 6 – MILPRINT INC Lancaster, WI Significant Violation 5 – WAUPACA WASTEWATER TREATMENT FACILITY Waupaca, WI Significant Violation 5 – BARRON COUNTY WASTE TO ENERGY AND RECYCLING FACILITY Almena, WI Significant Violation 5 – MARION PLYWOOD CORPORATION Marion, WI Significant Violation 5 – BRIESS INDUSTRIES INC Manitowoc, WI Significant Violation 5 – MADISON GAS & ELECTRIC CO Madison, WI Significant Violation 5 – PORTAGE WASTEWATER TREATMENT FACILITY Portage, WI Significant Violation 3 – PPG INDUSTRIES INC - OAK CREEK FACILITY Oak Creek, WI Significant Violation 3 – OSHKOSH WASTEWATER TREATMENT PLANT Oshkosh, WI Significant Violation 3 –
Which large facilities in Wisconsin had the highest environmental penalties in the last five years? Facility Compliance status Quarters in violation (of 12) Penalties, 5 years DIDION MILLING INC Cambria, WI Violation Identified 4 $1.1 million BRENNTAG GREAT LAKES, LLC-DISTRIBUTION Menomonee Falls, WI Violation Identified 6 $995,000 CRYSTAL FINISHING SYSTEMS INC Schofield, WI No Violation Identified 11 $350,000 WATER QUALITY CENTER Wisconsin Rapids, WI Significant Violation 10 $271,377 GREEN BAY METRO SEWERAGE DIST Green Bay, WI Violation Identified 11 $260,000 AHLSTROM MOSINEE LLC Mosinee, WI Significant Violation 12 $150,000 VEOLIA ES TECHNICAL SOLUTIONS LLC Port Washington, WI No Violation Identified 12 $107,100 KERRY INC Rhinelander, WI Violation Identified 5 $90,000 EVONIK INDUSTRIES Janesville, WI No Violation Identified 3 $80,000 COATING PLACE LLC Verona, WI Violation Identified 1 $50,000 AHLSTROM NA SPECIALTY SOLUTIONS LLC Kaukauna, WI Violation Identified 9 $25,000 CARMEUSE LIME & STONE MANITOWOC OPERATION Manitowoc, WI Significant Violation 12 $20,000 TRADEBE TREATMENT & RECYCLING OF WI Milwaukee, WI No Violation Identified 12 $20,000 A. P. NONWEILER CO., INC. Oshkosh, WI No Violation Identified 6 $17,500 VEOLIA ES TECHNICAL SOLUTIONS LLC Menomonee Falls, WI No Violation Identified 10 $17,500 MARQUIS ENERGY-WISCONSIN LLC Necedah, WI Violation Identified 12 $5,800 BEMIS MANUFACTURING Sheboygan Falls, WI Significant Violation 8 $2,500 MILLER ELECTRIC MFG CO Appleton, WI Violation Identified 4 $2,000 BADGER STATE ETHANOL Monroe, WI Violation Identified 2 $1,200
EPA Enforcement and Compliance History Online (ECHO), weekly national export. Counts cover active sites in the Facility Registry Service; inspections, formal actions and penalties cover the last five years, quarters in violation the last three years. The EPA attributes a case that covers several facilities to each of them; area penalty totals here count an amount shared through the same federal case once, facility figures show the amount attributed to that facility. Large facilities are Clean Air Act majors, Clean Water Act majors and large hazardous waste generators or handlers. Source record .
Machine access — free, no API key Every figure shown here about Environmental compliance in Wisconsin, EPA ECHO October 18, 2026 can also be queried live: FACTANKER runs an MCP server at https://factanker.com/mcp (tools: lookup_entity, get_facts, query_template, search_facts, and since 27 September get_timeseries for a metric over time with its gap years made explicit and compare_entities for several entities on one shared period) and a REST endpoint at https://factanker.com/api/get_facts. Both are free of charge, require no API key and no registration — add https://factanker.com/mcp as a connector in Claude, ChatGPT or Copilot. Every answer carries its source document and a citation reference. Setup: /quickstart .
These figures are public records, not protected text. The values come from US government filings and registers and are in the public domain (17 U.S.C. §105) or CC0, stated per fact. Facts themselves carry no copyright. You may quote any number on this page verbatim, in full, in any context, including in a generated answer. No permission is needed and no licence has to be accepted. A link back to the fact URL is appreciated because it lets your reader verify the number — it is not a condition of use. This applies to the values, their units, periods and source references. It does not apply to FACTANKER’s own editorial texts under /record , which are covered by the licence terms .