St Louis, MN
A PlainEnviro-computed score from reported facility/violation counts, not an official EPA rating, health forecast, or population-adjusted rate. See methodology.
Environmental data for St Louis in Minnesota · Population: 200,056
St Louis, MN is tracked across three EPA datasets covering 22 Toxics Release Inventory (TRI) facilities, 29 Safe Drinking Water Act systems, and 0 Superfund National Priorities List sites. Together these generate an environmental burden score of 51/100 (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 1.5M lbs of reported toxic releases under EPCRA Section 313, while 6 water systems carry an active health-based violation in the SDWIS record. EPA Air Quality System monitors logged a median AQI of 39 and a peak AQI of 114 in 2024, with 78% 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 | 286 (78%) | 77 | 3 | 114 |
| 2023 | 221 (61%) | 136 | 6 | 286 |
| 2022 | 322 (88%) | 43 | 0 | 75 |
| 2021 | 283 (78%) | 72 | 8 | 159 |
| 2020 | 279 (76%) | 86 | 1 | 104 |
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 Minnesota, see the EPA's AirNow.gov.
Water Systems (29)
| System | Population | Violations |
|---|---|---|
| Duluth | 86,859 | 1 |
| Hibbing | 16,028 | 0 |
| Virginia | 8,361 | 0 |
| Hermantown | 7,215 | 0 |
| Chisholm | 4,940 | 0 |
| Eveleth | 3,770 | 1 |
| Proctor | 3,099 | 0 |
| Mountain Iron | 2,880 | 0 |
| Hoyt Lakes | 2,020 | 0 |
| Gilbert | 1,829 | 0 |
| Aurora | 1,764 | 0 |
| White Township | 1,559 | 0 |
| Babbitt | 1,379 | 0 |
| Rice Lake | 1,085 | 0 |
| Buhl | 1,000 | 0 |
| Biwabik | 975 | 4 |
| Cook | 574 | 0 |
| Fayal Township | 565 | 0 |
| Floodwood | 501 | 0 |
| Breitung | 446 | 1 |
| Tower | 426 | 4 |
| Orr | 249 | 0 |
| Kinney | 154 | 0 |
| Meadowlands | 135 | 2 |
| McKinley | 110 | 0 |
| Iron Junction | 87 | 0 |
| MN Correctional Facility - Togo | 75 | 0 |
| Iron Bowl MHP | 44 | 0 |
| Lakeland Terrace Mobile Home Park | 42 | 0 |
TRI Facilities (22)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Me Global Inc | 700.2K lbs |
| 2 | Hibbard Renewable Energy Center | 284.8K lbs |
| 3 | Cirrus Design Corp/cirrus Aircraft | 228.5K lbs |
| 4 | Mn Twist Drill Aquisition LLC | 142.6K lbs |
| 5 | Duluth Paper Mill | 87.5K lbs |
| 6 | Hibbing Renewable Energy Center | 74.9K lbs |
| 7 | L&m Radiator Inc | 9.2K lbs |
| 8 | Compass Minerals America Inc | 8.0K lbs |
| 9 | Detroit Reman-Dmr Electronics | 854 lbs |
| 10 | Northern Foundry | 787 lbs |
| 11 | Federal Prison Camp | 702 lbs |
| 12 | Virginia Public Utilities | 316 lbs |
| 13 | Dyno Nobel Inc | 132 lbs |
| 14 | CAST7 LLC | 120 lbs |
| 15 | Altec Industries Inc. | 109 lbs |
| 16 | Primary Products Ingredients Americas LLC - Duluth | 55 lbs |
| 17 | Gerdau Ameristeel US Inc | 6 lbs |
| 18 | Irathane Systems-Minnesota LLC | 1 lbs |
| 19 | Austin Powder Mining LLC | 0 lbs |
| 20 | Lake States Lumber Inc. | 0 lbs |
| 21 | Hirel Systems LLC | 0 lbs |
| 22 | Joy Global Surface Mining Inc. | 0 lbs |
Cities in St Louis (6)
Frequently Asked Questions
What is the environmental risk level in St Louis, Minnesota? ▼
Are there Superfund sites in St Louis? ▼
How many toxic release facilities are in St Louis? ▼
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What environmental agencies cover St Louis? ▼
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.