Columbia, 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 Columbia in Wisconsin · Population: 58,322
TRI sites such as Columbia Energy Center; Encapsys LLC; United Wisconsin Grain Producers; SDWIS systems such as PORTAGE WATERWORKS; LODI WATERWORKS; POYNETTE WATERWORKS anchor Columbia, WI's EPA extract. Derived burden score 54/100 (Moderate 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 Columbia include LODI WATERWORKS; POYNETTE WATERWORKS; RANDOLPH WATER DEPT, while Columbia Energy Center leads reported TRI pounds among local Form R filers. AQS median AQI 38 / peak 93 in 2024.
Burden score 54/100 (Moderate 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 Columbia -- 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 Columbia, WI: EPA TRI 2023 reporting year
Same facilities, both years
+58.5%
14 facilities that filed in 2022 and 2023
Whole inventory
+58.5%
1.8 million lb → 2.9 million lb, every facility that filed
- Columbia, WI's total reported releases rose from 1.8 million lb in 2022 to 2.9 million lb in 2023, based on EPA TRI filings.
- Columbia, WI's land releases rose from 1.7 million lb in 2022 to 2.8 million lb in 2023, based on EPA TRI filings.
- Columbia, WI's off-site transfers fell from 21.6 thousand lb in 2022 to 8.8 thousand lb in 2023, based on EPA TRI filings.
- Columbia, WI's air releases rose from 97.0 thousand lb in 2022 to 124.6 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 | 186 (92%) | 17 | 0 | 93 |
| 2023 | 133 (66%) | 52 | 16 | 159 |
| 2022 | 191 (95%) | 11 | 0 | 80 |
| 2021 | 181 (87%) | 27 | 0 | 100 |
| 2020 | 187 (92%) | 12 | 4 | 115 |
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 (21)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| PORTAGE WATERWORKS | 10,437 | 0 |
| LODI WATERWORKS | 3,146 | 3 |
| POYNETTE WATERWORKS | 2,520 | 2 |
| PARDEEVILLE WATERWORKS | 2,151 | 0 |
| HARMONY GROVE SAN DIST | 1,950 | 0 |
| RANDOLPH WATER DEPT | 1,800 | 20 |
| RIO WATERWORKS | 1,095 | 1 |
| ARLINGTON WATERWORKS | 946 | 5 |
| WYOCENA WATERWORKS | 768 | 0 |
| SADDLE RIDGE ESTATES | 700 | 2 |
| FRIESLAND WATERWORKS | 345 | 3 |
| SUBURBAN HEIGHTS MHP | 90 | 0 |
| FOX MARQUETTE MOBILE HOME PARK | 72 | 0 |
| BREEZY POINT MHP 2 | 51 | 0 |
| RIVER VALLEY APTS NORTH | 48 | 0 |
| RIVER VALLEY APTS SOUTH | 48 | 2 |
| HARMONY MOBILE MANOR | 45 | 0 |
| PINE HAVEN ESTATES | 45 | 1 |
| CAPITAL HILL MOBILE HOME PARK | 36 | 0 |
| BREEZY POINT MHP 1 | 30 | 0 |
| DUCK INN MHP 2 | 25 | 0 |
TRI Facilities (15)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Columbia Energy Center | 6.4M lbs |
| 2 | Encapsys LLC | 911.4K lbs |
| 3 | United Wisconsin Grain Producers | 66.2K lbs |
| 4 | American Packaging Corp | 48.0K lbs |
| 5 | Energizer Manufacturing - Portage Plant | 45.7K lbs |
| 6 | Didion Ethanol LLC | 27.3K lbs |
| 7 | Grande Cheese Co Wyocena | 5.3K lbs |
| 8 | Fall River Foundry Co | 3.9K lbs |
| 9 | Fxi Inc. - Portage | 826 lbs |
| 10 | Cardinal Fg | 589 lbs |
| 11 | Everbrite LLC | 369 lbs |
| 12 | Ek Machine Co Inc | 242 lbs |
| 13 | Metalcraft of Mayville - Fall River | 168 lbs |
| 14 | Henry G. Meigs Inc. | 0 lbs |
| 15 | Associated Milk Producers Inc. | 0 lbs |
Cities in Columbia (10)
Frequently Asked Questions
What is the environmental risk level in Columbia, Wisconsin? ▼
Are there Superfund sites in Columbia? ▼
How many toxic release facilities are in Columbia? ▼
What is the air quality in Columbia? ▼
Is the drinking water safe in Columbia? ▼
What environmental agencies cover Columbia? ▼
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.