| Company | Location | Certifications | License # |
|---|---|---|---|
| Bauer Sewer and Mechanical LLC | Nerstrand, MN | Installer | L4523 |
| Bruce's Backhoe Service | Goodhue, MN | DesignerInspectorInstaller | L1993 |
| Cannon Valley Septic Services LLC | Nerstrand, MN | InstallerPumper | L2220 |
| Dougs Backhoe Service LLC | Cannon Falls, MN | Installer | L470 |
| EcoSense Septic Services, LLC | Welch, MN | DesignerInspectorInstallerPumper | L4177 |
| Ekblad Excavating LLC | Red Wing, MN | InstallerPumper | L706 |
| Environmental Design Group Inc | Frontenac, MN | DesignerInspector | L1955 |
| Fitzgerald Excavating & Trucking, Inc | Goodhue, MN | Installer | L2370 |
| Glander Excavating and Plumbing Inc | Lake City, MN | Installer | L879 |
| Hinrichs Plumbing & Pump Service Inc | Zumbrota, MN | DesignerInstaller | L656 |
| Holt Construction | Cannon Falls, MN | DesignerInstaller | L437 |
| Jason's Sewer Sucking Service | Wanamingo, MN | InstallerPumper | L2498 |
| KB Septic & Excavation LLC | Pine Island, MN | DesignerInstaller | L4290 |
| LSJZ Hutton, LLC | Wanamingo, MN | Installer | L4032 |
| MJS of Red Wing Inc | Red Wing, MN | DesignerInspectorInstallerPumper | L1575 |
| Riverland Excavating LLC | Red Wing, MN | Installer | L4154 |
| Schumacher Excavating, Inc. | Zumbrota, MN | DesignerInstaller | L4210 |
| Suburban Portables Inc | Red Wing, MN | Pumper | L2960 |
| Thomforde Enterprises LLC | Goodhue, MN | Installer | L845 |
| Thumann Construction, LLC | Goodhue, MN | InstallerPumper | L4324 |
| Voight Electric & Construction Inc | Goodhue, MN | Designer (Advanced)Inspector (Advanced)Installer | L3330 |
| Xcavate of Welch, LLC | Welch, MN | Installer | L4002 |
22 companies in the Minnesota MPCA SSTS licensed business registry are based in Goodhue County as of 2026-07-23. Companies based elsewhere in Minnesota also commonly serve the county.
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