Cass County, ND
The federal environmental record for Cass County (population 196,362): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
0
Superfund NPL sites
2
federal cleanup sites
1
PFAS-detecting water systems
17
TRI facilities
4
open tank releases
Drinking water: PFAS testing
Public water systems serving Cass with at least one PFAS detection under UCMR5. The federal limit for PFOA and PFOS is 4 ng/L; EPA proposed in May 2026 to rescind the limits for the other compounds, which are shown for information.
| System | Highest results | Reading |
|---|---|---|
| CASS RURAL WATER DISTRICT FARGO ND0901483 | PFBA: 7.3 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
17 facilities in Cass filed TRI reports for 2024, totalling 275k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| CARGILL INC | WEST FARGO | n-Hexane | 130k lb |
| THARALDSON ETHANOL PLANT I LLC | CASSELTON | Formic acid, Acetaldehyde | 66k lb |
| NORTH DAKOTA SOYBEAN PROCESSORS (NDSP) | CASSELTON | n-Hexane | 57k lb |
| TRUENORTH STEEL | WEST FARGO | Styrene | 12k lb |
| MARVIN COMPOSITES LLC | FARGO | Styrene | 6k lb |
| CASS CLAY CREAMERY INC | FARGO | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Nitric acid | 2k lb |
| HOLCIM - MWR INC. FARGO READY MIX | FARGO | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Lead compounds | 623 lb |
| CNH INDUSTRIAL AMERICA LLC | FARGO | Manganese, Copper | 377 lb |
| CATERPILLAR REMANUFACTURING DRIVETRAIN LLC | WEST FARGO | Nickel, Chromium | 277 lb |
| US CBP PEMBINA PORT OF ENTRY ND0014 | PEMBINA | Lead | 121 lb |
| TRAIL KING INDUSTRIES INC. | WEST FARGO | Nickel, Manganese | 20 lb |
| STRATA CONCRETE WEST FARGO | WEST FARGO | Lead | 2 lb |
| JOHN DEERE ISG FARGO | FARGO | Lead | 1 lb |
| CARDINAL GLASS IG | FARGO | - | 0 lb |
| PARKSITE TREATING PLANT | FARGO | - | 0 lb |
| FLINT HILLS RESOURCES PINE BEND LLC WEST FARGO | WEST FARGO | Lead, Polycyclic aromatic compounds | 0 lb |
| SPACEAGE SYNTHETICS LTD | FARGO | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 399 tank facilities in Cass: 393 tanks in service and 914 closed. 173 fuel releases are on record, of which 4 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Cass as Zone 1, the highest predicted indoor radon levels (over 4 pCi/L average). Radon and air quality are covered in depth on lung.com.
The record for one specific address
County figures blur what matters: distance. The Address Environmental Report runs these same federal datasets against one address and reports every site, tank, polluter and water result around it, with distances, in about a minute.
Get the report - $39All federal cleanup sites on file
The wider Superfund enterprise inventory (SEMS) for Cass, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- CAMELOT CLEANERSWEST FARGO
- USDA ARS ND BRL-USDA ARS BRLFARGO