| Company | Location | Certifications | License # |
|---|---|---|---|
| 3-D Construction & Enterprise LLLP | Cloquet, MN | DesignerInspectorInstallerPumper | L233 |
| Craig Harp Trucking & Excavating | Cromwell, MN | Installer | L2750 |
| Critical Hit Design & Inspection LLC | Cloquet, MN | Designer (Advanced)Inspector (Advanced) | L4454 |
| D & B Trucking & Excavating Inc | Carlton, MN | Installer | L1026 |
| Esko Excavating and Septics LLC | Esko, MN | Installer | L4386 |
| Gobel Excavating & Aggregate Inc | Moose Lake, MN | Installer | L690 |
| Hurst Contracting LLC | Barnum, MN | Installer | L4393 |
| Johnson Underground | Moose Lake, MN | DesignerInstaller | L2838 |
| Keith Clark Sand & Gravel LLC | Wright, MN | Installer | L3183 |
| Kiminski Paving Inc. | Cloquet, MN | Installer | L4246 |
| L&S Quality Septic and Dirt Work LLC | Moose Lake, MN | Installer | L4428 |
| Laveau Excavating & Trucking LLC | Wrenshall, MN | Installer | L1694 |
| Maki Trucking Inc. | Cloquet, MN | DesignerInspectorInstaller | L4121 |
| Mike's Sewer Service, Inc | Barnum, MN | Pumper | L2139 |
| Northshore Dirtwork LLC | Wrenshall, MN | DesignerInstaller | L4309 |
| Pine Ridge Services LLC | Cloquet, MN | Installer | L4457 |
| Roger Hurd Inspection and Design | Carlton, MN | DesignerInspector | L3847 |
| Tollefson Excavating | Moose Lake, MN | Installer | L4496 |
18 companies in the Minnesota MPCA SSTS licensed business registry are based in Carlton County as of 2026-07-23. Companies based elsewhere in Minnesota also commonly serve the county.
Tell us what you need — we'll connect you with state-certified companies serving your area. No obligation.