Cass, MN
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.
Environmental data for Cass in Minnesota · Population: 30,688
TRI sites such as Evelands Inc; SDWIS systems such as NORTHSIDE; Pequot Lakes; Walker; NPL sites such as Agate Lake Scrapyard; St. Regis Paper Co. anchor Cass, MN's EPA extract. Derived burden score 28/100 (Low 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 Cass include INGER, while Evelands Inc leads reported TRI pounds among local Form R filers. AQS median AQI 27 / peak 164 in 2024.
Burden score 28/100 (Low 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 Cass -- 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 Cass, MN: EPA TRI 2023 reporting year
Same facilities, both years
+8.9%
1 facilities that filed in 2022 and 2023
Whole inventory
+8.9%
9.5 thousand lb → 10.4 thousand lb, every facility that filed
- Cass, MN's total reported releases rose from 9.5 thousand lb in 2022 to 10.4 thousand lb in 2023, based on EPA TRI filings.
- Cass, MN's air releases rose from 9.5 thousand lb in 2022 to 10.4 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 | 313 (86%) | 48 | 0 | 164 |
| 2023 | 260 (72%) | 94 | 5 | 145 |
| 2022 | 309 (89%) | 39 | 0 | 64 |
| 2021 | 103 (29%) | 237 | 7 | 275 |
| 2020 | 316 (91%) | 30 | 0 | 78 |
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 Minnesota, see the EPA's AirNow.gov.
Water Systems (21)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| NORTHSIDE | 2,086 | 0 |
| Pequot Lakes | 1,200 | 0 |
| Walker | 990 | 0 |
| Pine River | 939 | 0 |
| Cass Lake | 691 | 0 |
| Motley | 680 | 0 |
| Pillager | 523 | 0 |
| Remer | 369 | 0 |
| BALL CLUB | 333 | 0 |
| Hackensack | 306 | 0 |
| Backus | 267 | 0 |
| INGER | 186 | 3 |
| BENA | 112 | 0 |
| PLANTATION | 105 | 0 |
| Townsedge Estates | 65 | 0 |
| Timberlane Estates | 64 | 0 |
| Kabekona Village Development | 50 | 0 |
| Shiloh Assisted Living | 50 | 0 |
| OAK POINT | 45 | 0 |
| OLD AGENCY | 30 | 0 |
| Golden Horizons Assisted Living Facility | 30 | 0 |
TRI Facilities (1)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Evelands Inc | 45.1K lbs |
Superfund Sites (2)
| Site Name | Status | HRS Score |
|---|---|---|
| Agate Lake Scrapyard | Deleted NPL Site | 29.68 |
| St. Regis Paper Co. | NPL Site | 52.88 |
Cities in Cass (11)
Frequently Asked Questions
What is the environmental risk level in Cass, Minnesota? ▼
Are there Superfund sites in Cass? ▼
How many toxic release facilities are in Cass? ▼
What is the air quality in Cass? ▼
Is the drinking water safe in Cass? ▼
What environmental agencies cover Cass? ▼
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.