Columbia, 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 Columbia in Wisconsin · Population: 58,322
Columbia, WI is tracked across three EPA datasets covering 15 Toxics Release Inventory (TRI) facilities, 24 Safe Drinking Water Act systems, and 0 Superfund National Priorities List sites. Together these generate an environmental burden score of 54/100 (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 7.5M lbs of reported toxic releases under EPCRA Section 313, while 13 water systems carry an active health-based violation in the SDWIS record. EPA Air Quality System monitors logged a median AQI of 38 and a peak AQI of 93 in 2024, with 92% 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 | 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 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 (24)
| System | Population | Violations |
|---|---|---|
| PORTAGE WATERWORKS | 10,437 | 0 |
| COLUMBUS UTILITIES | 5,173 | 4 |
| LODI WATERWORKS | 3,146 | 3 |
| POYNETTE WATERWORKS | 2,520 | 1 |
| PARDEEVILLE WATERWORKS | 2,151 | 0 |
| HARMONY GROVE SAN DIST | 1,950 | 0 |
| RANDOLPH WATER DEPT | 1,800 | 15 |
| FALL RIVER WATERWORKS | 1,793 | 1 |
| RIO WATERWORKS | 1,095 | 1 |
| ARLINGTON WATERWORKS | 823 | 5 |
| WYOCENA WATERWORKS | 768 | 0 |
| CAMBRIA WATERWORKS | 767 | 2 |
| CRYSTAL LAKE RV RESORT LLC | 725 | 8 |
| SADDLE RIDGE ESTATES | 700 | 1 |
| FRIESLAND WATERWORKS | 345 | 3 |
| WISCONSIN ACADEMY MAIN CAMPUS | 115 | 1 |
| SUBURBAN HEIGHTS MHP | 90 | 0 |
| FOX MARQUETTE MOBILE HOME PARK | 72 | 0 |
| BREEZY POINT MHP 2 | 51 | 0 |
| 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 (6)
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.