At Wolff Underground, we believe our work speaks for itself. With over 30 years of experience, we’ve completed hundreds of drain, sewer, water line, and excavation projects across Appleton, Green Bay, Oshkosh, Clintonville, and the greater Fox Valley. Our Project Gallery highlights the variety of jobs we’ve tackled — from residential repairs to large‑scale commercial and agricultural installations.
In 2024, the homeowner discovered that the septic system had not been functioning properly for some time. Wolff Underground replaced the damaged line with a brand‑new PVC pipe leading to the septic tank, as shown here.
Wolff Underground
Appleton, Wisconsin, United States
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