Manitowoc, 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 Manitowoc in Wisconsin · Population: 81,314
TRI sites such as Manitowoc Public Utilities; Jagemann Plating Co; Tenneco; SDWIS systems such as MANITOWOC WATERWORKS; TWO RIVERS WATERWORKS; KIEL WATERWORKS; NPL sites such as Lemberger Landfill, Inc.; Lemberger Transport & Recycling anchor Manitowoc, 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 Manitowoc include TWO RIVERS WATERWORKS; KIEL WATERWORKS; CLEVELAND WATERWORKS, while Manitowoc Public Utilities leads reported TRI pounds among local Form R filers. AQS median AQI 39 / peak 129 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 Manitowoc -- 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 Manitowoc, WI: EPA TRI 2023 reporting year
Same facilities, both years
-38.1%
19 facilities that filed in 2022 and 2023
Whole inventory
-35.9%
849.8 thousand lb → 544.5 thousand lb, every facility that filed
Between the two reporting years, 1 facility filed for the first time and 3 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Manitowoc, WI's total reported releases fell from 839.6 thousand lb in 2022 to 519.9 thousand lb in 2023, based on EPA TRI filings.
- Manitowoc, WI's land releases rose from 31 lb in 2022 to 60 lb in 2023, based on EPA TRI filings.
- Manitowoc, WI's off-site transfers fell from 819.4 thousand lb in 2022 to 502.7 thousand lb in 2023, based on EPA TRI filings.
- Manitowoc, WI's chemicals reported fell from 26 in 2022 to 22 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 | 172 (84%) | 26 | 6 | 129 |
| 2023 | 162 (79%) | 40 | 2 | 177 |
| 2022 | 167 (84%) | 25 | 4 | 182 |
| 2021 | 174 (84%) | 30 | 3 | 119 |
| 2020 | 169 (88%) | 19 | 4 | 136 |
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 (14)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| MANITOWOC WATERWORKS | 34,500 | 0 |
| TWO RIVERS WATERWORKS | 11,270 | 3 |
| KIEL WATERWORKS | 3,932 | 3 |
| CLEVELAND WATERWORKS | 1,524 | 1 |
| MISHICOT WATERWORKS | 1,432 | 0 |
| REEDSVILLE WATERWORKS | 1,200 | 4 |
| VALDERS WATERWORKS | 954 | 0 |
| WHITELAW WATERWORKS | 757 | 1 |
| ST NAZIANZ WATERWORKS | 705 | 0 |
| MARIBEL WATERWORKS | 355 | 0 |
| KELLNERSVILLE WATERWORKS | 301 | 6 |
| HOLY FAMILY CONVENT | 195 | 0 |
| QUIET COUNTRY COMMUNITY ASSN | 90 | 0 |
| CHIARA CONVENT | 40 | 0 |
TRI Facilities (26)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Manitowoc Public Utilities | 3.0M lbs |
| 2 | Jagemann Plating Co | 510.2K lbs |
| 3 | Tenneco | 225.7K lbs |
| 4 | Broadwind Towers & Heavy Fabrications | 122.5K lbs |
| 5 | Red Arrow Products Co LLC | 85.6K lbs |
| 6 | Wells Cos (formerly Spancrete Industries Inc.) | 52.6K lbs |
| 7 | Eck Industries | 24.6K lbs |
| 8 | Pentair - Manitowoc Ice | 17.0K lbs |
| 9 | Wisconsin Aluminum Foundry Co Inc | 7.6K lbs |
| 10 | Cnh Industrial America LLC (formerly Miller St Nazianz) | 4.5K lbs |
| 11 | Skana Aluminum Co | 1.6K lbs |
| 12 | Spartech LLC | 1.4K lbs |
| 13 | Nextera Energy Point Beach LLC | 1.3K lbs |
| 14 | Manitowoc Tool & Manufacturing LLC | 526 lbs |
| 15 | Parker Hannifin Corp - Hpd | 459 lbs |
| 16 | Jagemann Stamping Co | 358 lbs |
| 17 | Gkn Sinter Metals | 292 lbs |
| 18 | Kdc/one - Northern Labs | 289 lbs |
| 19 | Rockwell Lime Co | 238 lbs |
| 20 | Parker Hannifin Corp Parflex Div | 114 lbs |
| 21 | Household Utilities Inc | 100 lbs |
| 22 | Tramontina US Cookware | 48 lbs |
| 23 | Stoelting a Vollrath Co | 44 lbs |
| 24 | Manitowoc Tool & Machining LLC | 31 lbs |
| 25 | Manitowoc Grey Iron Foundry Inc | 0 lbs |
| 26 | Evm Inc | 0 lbs |
Superfund Sites (2)
| Site Name | Status | HRS Score |
|---|---|---|
| Lemberger Landfill, Inc. | NPL Site | 34.07 |
| Lemberger Transport & Recycling | NPL Site | 34.58 |
Cities in Manitowoc (13)
Frequently Asked Questions
What is the environmental risk level in Manitowoc, Wisconsin? ▼
Are there Superfund sites in Manitowoc? ▼
How many toxic release facilities are in Manitowoc? ▼
What is the air quality in Manitowoc? ▼
Is the drinking water safe in Manitowoc? ▼
What environmental agencies cover Manitowoc? ▼
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.