Sheboygan, WI
A PlainEnviro-computed score from reported facility/violation counts, not an official EPA rating, health forecast, or population-adjusted rate. See methodology. This is a different measure than the EJ Screening score for this county, which ranks it by percentile against every other tracked county rather than against fixed national thresholds.
Environmental data for Sheboygan in Wisconsin · Population: 117,783
Sheboygan, WI is tracked across three EPA datasets covering 27 Toxics Release Inventory (TRI) facilities, 17 Safe Drinking Water Act systems, and 0 Superfund National Priorities List sites. Together these generate an environmental burden score of 59/100 (Moderate Risk), calibrated against national distributions for facility density, chemical release volume, Superfund concentration, and water-system health violations.
Industrial disclosures inside the county total 4.2M lbs of reported toxic releases under EPCRA Section 313, while 8 water systems carry an active health-based violation in the SDWIS record. EPA Air Quality System monitors logged a median AQI of 40 and a peak AQI of 166 in 2024, with 81% of observed days rated "Good" (0–50).
All figures below draw directly from federal EPA records, TRI self-reported emissions, SDWIS compliance history, NPL Hazard Ranking System scores, and AQS daily AQI summaries, and are not adjusted, weighted, or forecast. A past violation or elevated score does not itself indicate current unsafe conditions; it documents the regulatory and disclosure history publicly filed with the U.S. Environmental Protection Agency through the most recent reporting cycle.
Air Quality History (2020–2024)
EPA Air Quality Index (AQI) data showing how many days per year fall into each air quality category.
| Year | Good | Moderate | Unhealthy (SG) | Max AQI |
|---|---|---|---|---|
| 2024 | 166 (81%) | 30 | 7 | 166 |
| 2023 | 132 (65%) | 53 | 16 | 207 |
| 2022 | 172 (85%) | 24 | 6 | 177 |
| 2021 | 164 (79%) | 39 | 5 | 126 |
| 2020 | 170 (82%) | 31 | 4 | 159 |
Source: EPA Air Quality System (AQS) Annual AQI by County EPA Air Quality System (AQS) Annual AQI by County AQI categories: Good (0-50), Moderate (51-100), Unhealthy for Sensitive Groups (101-150), Unhealthy (151-200), Very Unhealthy (201-300), Hazardous (301+)
For real-time air quality readings and pollutant breakdowns in Wisconsin, see the EPA's AirNow.gov.
Water Systems (17)
| System | Population | Violations |
|---|---|---|
| SHEBOYGAN WATER UTILITIES | 49,931 | 0 |
| PLYMOUTH UTILITIES | 8,964 | 2 |
| SHEBOYGAN FALLS UTILITIES | 8,165 | 1 |
| SHEBOYGAN TN WATERWORKS | 4,596 | 0 |
| OOSTBURG WATERWORKS | 3,110 | 0 |
| KOHLER WATERWORKS | 2,271 | 0 |
| CEDAR GROVE WATERWORKS | 2,213 | 0 |
| RANDOM LAKE WATERWORKS | 1,594 | 0 |
| ELKHART LAKE WATERWORKS | 1,567 | 1 |
| LAKELAND UNIVERSITY | 1,200 | 0 |
| CASCADE WATERWORKS | 719 | 1 |
| ROCKY KNOLL HEALTH CARE FAC | 564 | 3 |
| ADELL WATERWORKS | 510 | 2 |
| WALDO WATERWORKS | 500 | 0 |
| GLENBEULAH WATERWORKS | 461 | 1 |
| BAINS COUNTRY ESTATES MHP | 200 | 1 |
| COUNTRY AIRE MOBILE HOME PARK | 60 | 0 |
TRI Facilities (27)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Kohler Co | 2.0M lbs |
| 2 | Aldrich Chemical Co LLC | 564.4K lbs |
| 3 | Bemis Manufacturing Co Plant B | 518.8K lbs |
| 4 | Edgewater Generating Station | 369.8K lbs |
| 5 | Plastics Engineering Co | 219.7K lbs |
| 6 | Hexion Inc-Sheboygan Site | 151.9K lbs |
| 7 | Nemak USA Inc-Gateway | 132.0K lbs |
| 8 | Sheboygan Paint Co | 95.2K lbs |
| 9 | Millennium Technologies LLC | 75.2K lbs |
| 10 | Saco Aei | 33.8K lbs |
| 11 | Sartori Co | 16.9K lbs |
| 12 | Watry Industries | 9.0K lbs |
| 13 | Rockline Industries | 8.4K lbs |
| 14 | Actus Nutrition-Adell | 7.5K lbs |
| 15 | Nemak USA Inc-Taylor | 4.0K lbs |
| 16 | Vollrath Co LLC | 1.7K lbs |
| 17 | Rehlko-Mosel | 1.0K lbs |
| 18 | Diamond Vogel Inc. | 1.0K lbs |
| 19 | Willman Industries Inc | 708 lbs |
| 20 | Curt G Joa Inc | 215 lbs |
| 21 | Poly Vinyl Co Inc. | 183 lbs |
| 22 | Htt Inc | 35 lbs |
| 23 | Gardner Denver Thomas | 20 lbs |
| 24 | American Orthodontics Corp | 12 lbs |
| 25 | Htt Inc | 2 lbs |
| 26 | American Excelsior Co | 0 lbs |
| 27 | Dutchland Plastics Llc. | 0 lbs |
Cities in Sheboygan (7)
Frequently Asked Questions
What is the environmental risk level in Sheboygan, Wisconsin? ▼
Are there Superfund sites in Sheboygan? ▼
How many toxic release facilities are in Sheboygan? ▼
What is the air quality in Sheboygan? ▼
Is the drinking water safe in Sheboygan? ▼
What environmental agencies cover Sheboygan? ▼
What does this county environmental profile show?
This county environmental profile rolls up EPA Toxics Release Inventory facility reports, Safe Drinking Water Information System public-water-system filings, and Superfund National Priorities List sites for the county boundary defined by the U.S. Census Bureau. Facility counts reflect facilities with a reporting address inside the county, not where downstream environmental effects may be observed. Population figures are from the most recent Census ACS 5-year estimate. The county detail page is updated whenever the upstream EPA programs publish revised data; see the methodology page for the documented ingest cadence and the editorial choices governing how aggregations are computed.
Read our methodology - how this data is sourced, computed, and verified.