Dennis has been a master plumber for 40 years. Having served his apprenticeship under his father, Dennis then moved to LaCrosse to work for 2 larger plumbing companies before returning to South Central Wisconsin to purchase Zimmerman Plumbing, Inc in 1998. Dennis has worked in all facets of the business, from the field to the office, including estimating and project management. Currently, Dennis’s main focus is mentoring and developing the next generation of leaders at Zimmerman Plumbing, Inc. Some of Dennis’s projects include Black River Falls Hospital, Mile Bluff Medical Center, Lakeview Medical Center and St. Cecilia’s Catholic Church.