| Company | Location | Certifications | License # |
|---|---|---|---|
| Gustafson Septic Service Inc | Stanley, ND | Pumper (Class I) | NDSP007306 |
| J & J Rental, LLC | New Town, ND | Pumper (Class I) | NDSP005689 |
| Jerry's Septic Service | New Town, ND | Pumper (Class I) | NDSP007392 |
| Juma's Septic Service | Ross, ND | Pumper (Class II) | NDSP007348 |
| Pearl Valley Oilfield Services & Rentals, LLC | Stanley, ND | Pumper (Class I) | NDSP007351 |
5 companies in the North Dakota DEQ licensed septic system installers and sanitary pumpers are based in Mountrail County as of 2026-07-23. Companies based elsewhere in North Dakota also commonly serve the county.
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