| Company | Location | Certifications | License # |
|---|---|---|---|
| Double D Gravel Inc. | Pipestone, MN | Designer (Advanced)Inspector (Advanced)Installer | L4237 |
| Hulstein Excavating LLC | Edgerton, MN | DesignerInspectorInstaller | L:3909 |
| Roger McConnell | Ruthton, MN | Installer | L3834 |
| Ron Kadlec Excavating, Inc. | Mora, MN | Installer | L1012 |
4 companies in the Minnesota MPCA SSTS licensed business registry are based in Pipestone County as of 2026-07-23. Companies based elsewhere in Minnesota also commonly serve the county.
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