| Company | Location | Certifications | License # |
|---|---|---|---|
| Baier Construction Inc | Springfield, MN | DesignerInspectorInstaller | L3190 |
| Gag Sheet Metal Inc. | New Ulm, MN | Pumper | L4273 |
| Graff Construction LLC | Springfield, MN | Installer | L4254 |
| Heiderscheidt Digging Inc | Sleepy Eye, MN | DesignerInspectorInstallerPumper | L72 |
| J & L Corner Car Wash & Laundromat & Pumping Service | Springfield, MN | Pumper | L2397 |
| JP Plumbing & Heating Inc. | New Ulm, MN | InstallerPumper | L4484 |
| MR Paving and Excavating Inc | New Ulm, MN | DesignerInspectorInstaller | L1706 |
| S and J Construction and Masonry of Sleepy Eye LLC | Sleepy Eye, MN | Installer | L3916 |
| Schultz Plumbing Heating and Drain Cleaning Inc | New Ulm, MN | Pumper | L3477 |
| Searles Well Drilling Inc | New Ulm, MN | Designer (Advanced)Inspector (Advanced)InstallerPumper | L894 |
10 companies in the Minnesota MPCA SSTS licensed business registry are based in Brown County as of 2026-07-23. Companies based elsewhere in Minnesota also commonly serve the county.
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