| Company | Location | Certifications | License # |
|---|---|---|---|
| Blilies Excavation & Septic LLC | Barnesville, MN | InstallerPumper | L4300 |
| M & M Contractors, LLC | Breckenridge, MN | DesignerInspectorInstallerPumper | L2961 |
2 companies in the Minnesota MPCA SSTS licensed business registry are based in Wilkin County as of 2026-07-23. Companies based elsewhere in Minnesota also commonly serve the county.
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