UST Check → counties → North Dakota → Mountrail
Underground storage tanks & leak sites in Mountrail County, ND
Every figure below is from EPA UST Finder — the EPA-compiled national registry of state-reported underground storage tanks — county aggregates as published by EPA.
119registered tank facilities
120open tanks
215closed tanks
23leak incidents on record
2cleanups still open
2 leak cleanups in
Mountrail County are still open — the state has not closed the case.
An open cleanup near a property you're buying or lending on is a findable, checkable fact: it appears in a
per-address screen with distance and the registry record.
Largest registered facilities
By open-tank count, from the facility-level registry. Every fact is attributed to the EPA record (linked ID); something wrong — use the correction path in the footer and we'll fix or remove it promptly.
| Facility | City | Open / closed tanks | Status | EPA record |
|---|---|---|---|---|
| United Prairie Cooperative C Store | New Town ND 58763- | 9 / 3 | Open UST(s) | ND381 |
| United Quality Travel Plaza | New Town ND 58763- | 9 / 0 | Open UST(s) | ND10999 |
| United Quality Coop - C-Store East | New Town | 7 / 3 | Open UST(s) | 3010012 |
| Plaza Farmers Union Oil | Plaza ND 58771- | 6 / 0 | Open UST(s) | ND10895 |
| Cenex Self Serve and C-Store | Stanley ND 58784- | 5 / 4 | Open UST(s) | ND538 |
| Holiday Stationstore #432 | Stanley ND 58784- | 5 / 0 | Open UST(s) | ND10878 |
| Superpumper 43 | New Town ND 58763- | 4 / 0 | Open UST(s) | ND10918 |
| Four Bears Convenience Store (Eagles Landing) | New Town ND 58763 | 4 / 0 | Open UST(s) | ND10985 |
Open leak cleanups — most recently reported
| Site | City | Reported | Substance | EPA record |
|---|---|---|---|---|
| Mountrail Electric Coop Inc | Stanley ND 58784 | not reported | — | ND3 |
What this means if you're buying or lending here
- "Closed" ≠ clean. A closed tank was taken out of service per the registry — many were closed without soil testing, especially before the late 1990s.
- The registry is incomplete by design. Tanks removed before 1986 and most residential heating-oil tanks were never registered. A county with 119 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. 2 cases in this county are still open; contamination may still be under investigation or remediation — distance from a specific parcel is what matters, and that's a per-address question.
Screen a specific property
This page covers the county. A purchase or loan decision needs the registry around one address: registered tanks at the parcel, every facility within 500 and 1,500 ft, leak cleanups with status and distance — each line cited to the official record.
Screen an address — $49 How it worksThis is a screen of EPA-registered tank and leak records, not an environmental site assessment. State registries are incomplete by design: tanks removed before 1986 and most residential heating-oil tanks were never registered, so a clean screen cannot prove the absence of a tank. "Closed" means a tank was taken out of service per the registry — it does not certify that no contamination remains.
source: EPA UST Finder EPA data vintage 2024-12-04 computed 2026-06-12