About wolff underground

Founded in 1995, Wolff Underground began as a dedicated drain and sewer cleaning company. Over the years, we’ve expanded our services to meet the growing needs of our customers, adding trenching, boring, hydro excavation, water line installation, and more. Our success is built on quality workmanship, reliable service, and strong relationships with the communities we serve.

Wolff Underground is a family‑owned drain and sewer business committed to earning our clients’ trust. With over 30 years of knowledge and expertise, we accurately diagnose and solve drainage and sewer issues of all kinds. Our mission is simple: deliver dependable solutions that protect property, restore function, and give customers peace of mind.

Our vision is to be recognized as a leader in the drain and sewer industry across Northeast Wisconsin. From our roots in drain cleaning to our expanded excavation and utility services, we strive to be the most respected and successful underground service provider in the region.