Sheboygan, WI
Transparent derived index from EPA TRI / SDWIS / Superfund extracts: not an official EPA rating. Fixed caps: facilities ≤25 pts (50+ = max), log10 releases ≤25 pts, Superfund ≤25 pts (5/site), health-violation systems ≤15 pts (3/system), high-chemical facilities ≤10 pts. Bands: High ≥60, Moderate ≥30. See methodology. This is a different measure than the EJ Screening score for this county, which ranks it by percentile against other tracked counties rather than against these fixed caps.
Environmental data for Sheboygan in Wisconsin · Population: 117,783
TRI sites such as Kohler Co; Aldrich Chemical Co LLC; Bemis Manufacturing Co Plant B; SDWIS systems such as SHEBOYGAN WATER UTILITIES; PLYMOUTH UTILITIES; SHEBOYGAN FALLS UTILITIES; NPL sites such as Kohler Co. Landfill; Sheboygan Harbor & River anchor Sheboygan, WI's EPA extract. Derived burden score 69/100 (High Risk) uses fixed national caps on density, log release volume, Superfund count, and health-flagged systems - not an official EPA rating.
Health-flagged SDWIS rows in Sheboygan include PLYMOUTH UTILITIES; SHEBOYGAN FALLS UTILITIES; ELKHART LAKE WATERWORKS, while Kohler Co leads reported TRI pounds among local Form R filers. AQS median AQI 40 / peak 166 in 2024.
Burden score 69/100 (High Risk) is the only weighted composite on this page. The tables below list every TRI facility, SDWIS system, and Superfund site EPA has on record for Sheboygan -- not just the names called out above -- reproducing the disclosure history as filed, not a current-safety verdict. Extract current as of 2026-08-25.
Release-over-release change
What changed for Sheboygan, WI: EPA TRI 2023 reporting year
Same facilities, both years
-11.2%
27 facilities that filed in 2022 and 2023
Whole inventory
-11.2%
709.4 thousand lb → 630.2 thousand lb, every facility that filed
- Sheboygan, WI's total reported releases fell from 709.4 thousand lb in 2022 to 630.2 thousand lb in 2023, based on EPA TRI filings.
- Sheboygan, WI's land releases rose from 0 lb in 2022 to 20.8 thousand lb in 2023, based on EPA TRI filings.
- Sheboygan, WI's water releases rose from 1.4 thousand lb in 2022 to 2.0 thousand lb in 2023, based on EPA TRI filings.
- Sheboygan, WI's air releases fell from 276.6 thousand lb in 2022 to 216.0 thousand lb in 2023, based on EPA TRI filings.
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 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 | System pop (SDWIS) | Violations |
|---|---|---|
| SHEBOYGAN WATER UTILITIES | 49,931 | 0 |
| PLYMOUTH UTILITIES | 8,964 | 2 |
| SHEBOYGAN FALLS UTILITIES | 8,687 | 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 | 2 |
| ADELL WATERWORKS | 510 | 2 |
| WALDO WATERWORKS | 500 | 0 |
| GLENBEULAH WATERWORKS | 461 | 1 |
| BAINS COUNTRY ESTATES MHP | 200 | 2 |
| 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 | 130.0K 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 |
Superfund Sites (2)
| Site Name | Status | HRS Score |
|---|---|---|
| Kohler Co. Landfill | NPL Site | 42.93 |
| Sheboygan Harbor & River | NPL Site | 33.79 |
Cities in Sheboygan (11)
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.