GroundRosterPetersen Supply
| Name | Petersen Supply |
| License type | ATU Maintainer |
| Location | Fredonia, Wisconsin 53021 |
| Service area | Aerobic Treatment Unit Maintenance |
| Phone | (262) 692-2416 |
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What this license covers
- Pumping / cleaning: licensed to pump out and clean septic tanks, service them, and haul the waste.
How to verify this license
We publish this listing exactly as it appears in Wisconsin's official licensing records; we do not vouch for the business itself. Before hiring, look up this license directly with the state, confirm it is still active, and ask for a current certificate of insurance.
Source: Walworth County POWTS Program, last checked 2026-08-19. Verify at the official source.
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