| Company | Location | Certifications | License # |
|---|---|---|---|
| 3 Bs LLC | Cohasset, MN | DesignerInstaller | L2423 |
| ACA Excavating L.L.C. | Keewatin, MN | Installer | L3993 |
| Al X Llc | Grand Rapids, MN | Installer | L3317 |
| BE Heaton Excavating | Grand Rapids, MN | Installer | L2458 |
| Carlson Excavating | Max, MN | Installer | L200 |
| Deer River Septic Pumping | Deer River, MN | Pumper | L3347 |
| Dig-It Inc. | Goodland, MN | DesignerInspectorInstaller | L3979 |
| J. E. Olson Contracting LLC | Deer River, MN | Installer | L2968 |
| Jeff Powell Excavating LLC | Effie, MN | DesignerInstaller | L4420 |
| Jeff's Restroom Trailer Rentals, LLC | Bovey, MN | Pumper | L4194 |
| John C. Anderson Excavating | Deer River, MN | DesignerInstaller | L974 |
| KLS Excavating LLC | Deer River, MN | Installer | L4376 |
| Larry Holmquist | Grand Rapids, MN | DesignerInspectorInstaller | L1016 |
| Little Bear Construction and Repair | Cook, MN | DesignerInspectorInstaller | L1768 |
| Maasch Construction Inc | Warba, MN | Installer | L2900 |
| Next Level Dirt Works | Bigfork, MN | Installer | L4167 |
| Northland Portables | Grand Rapids, MN | Pumper | L2853 |
| Northwoods Excavating Services Inc. | Bovey, MN | DesignerInspectorInstallerPumper | L1885 |
| Ohm Septic LLC | Grand Rapids, MN | Designer (Advanced)InspectorPumper | L4493 |
| Precision Design & Inspection LLC | Grand Rapids, MN | Designer (Advanced)Inspector (Advanced)Installer | L4199 |
| Rapid Rooter Sewer & Drain, Inc. | Grand Rapids, MN | Pumper | L2482 |
| RK Construction Services, Inc. | Marcell, MN | DesignerInspectorInstallerPumper | L1204 |
| Rob's Bobcat Service, Inc. | Hill City, MN | DesignerInstaller | L3862 |
| Ron Ex Excavating | Grand Rapids, MN | DesignerInspectorInstallerPumper | L697 |
| Ryan Site & Septic | Keewatin, MN | Installer | L4516 |
| Ryhti Construction and Excavating Inc | Nashwauk, MN | Installer | L704 |
| S & S Excavating and Construction Inc | Grand Rapids, MN | DesignerInspectorInstaller | L2010 |
| Sawyer's Dirtworks, LLC | Grand Rapids, MN | Installer | L4499 |
| Scooters Septic Service | Cohasset, MN | Pumper | L4209 |
| Specialty Construction Services | Grand Rapids, MN | Installer | L4130 |
| T&T Excavating LLP | Talmoon, MN | DesignerInstaller | L906 |
| W Roberts Excavating, LLC | Pengilly, MN | DesignerInspectorInstaller | L919 |
| William J Schwartz & Son Incorporated | Bovey, MN | DesignerInspectorInstaller | L430 |
| Williams Septic & Electric Inc | Squaw Lake, MN | DesignerInspectorInstaller | L384 |
34 companies in the Minnesota MPCA SSTS licensed business registry are based in Itasca County as of 2026-07-23. Companies based elsewhere in Minnesota also commonly serve the county.
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