| Company | Location | Certifications | License # |
|---|---|---|---|
| A1 Backhoe & Septic Service LLC | Bemidji, MN | DesignerInspectorInstallerPumper | L4134 |
| Antlers Well Drilling | Hines, MN | DesignerInstaller | L3278 |
| Bemidji Sewer & Waterworks Inc. | Hines, MN | DesignerInspectorInstallerPumper | L4086 |
| Bemidji Skidsteer Service, LLC | Shevlin, MN | Installer | L4347 |
| Devon Bunker Excavating Inc | Bemidji, MN | Installer | L2839 |
| Don Thomas Inc | Bemidji, MN | DesignerInstaller | L579 |
| H & R Septic Design | Bemidji, MN | Designer (Advanced)Inspector (Advanced) | L3106 |
| Hills Plumbing & Heating Inc | Bemidji, MN | DesignerInstaller | L107 |
| Juelson Plumbing & Heating Inc | Hines, MN | DesignerInstallerPumper | L3961 |
| Karl Dobmeier | Hines, MN | DesignerInspectorInstallerPumper | L3006 |
| Karvakko Engineering, Inc. | Bemidji, MN | DesignerInspector | L3984 |
| KDI Services LLC | Bemidji, MN | DesignerInspector | L4412 |
| Kurt Davis Bobcat Inc | Bemidji, MN | Installer | L2360 |
| Kyle Forseen Excavating LLC | Blackduck, MN | DesignerInstaller | L1658 |
| Larson Environmental | Bemidji, MN | Designer (Advanced)Inspector (Advanced) | L608 |
| Mac Excavating Inc | Bemidji, MN | DesignerInstaller | L2380 |
| Nendick Heating, Septic & Plumbing, Inc | Hines, MN | InstallerPumper | L2355 |
| Port-Able John Rental and Service | Bemidji, MN | Pumper | L4139 |
| Sparkys Construction Inc | Bemidji, MN | Installer | L623 |
| Tim Wilson Excavating LLC | Bemidji, MN | Installer | L359 |
| Triple C Excavating LLC | Bemidji, MN | Installer | L4469 |
| Wagner Plumbing & Heating Inc | Bemidji, MN | DesignerInstaller | L94 |
| Wes Plumbing & Heating Inc | Bemidji, MN | DesignerInstallerPumper | L70 |
23 companies in the Minnesota MPCA SSTS licensed business registry are based in Beltrami County as of 2026-07-23. Companies based elsewhere in Minnesota also commonly serve the county.
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