Regional Managers

Jeff Kamholz is the Regional Manager for Contractors within the Chicago, Joliet, and Hammond locations. He also oversees the Sales and Support of Hydronic Products & Water Heating. Jeff has been with Columbia Pipe & Supply since 2000. Prior to Columbia Pipe, he worked for Weil-McLain as a Sales Territory Manager and has been in the Boiler Business since 1989.

Jeff lives with his wife in Tinley Park, IL, has two sons and enjoys golfing in his spare time.

Gene Stevens is the Columbia Pipe regional manager who coordinates service to contractors in southern Wisconsin and northeastern Illinois. He entered the industry in 1978 and has seen the business from a variety of viewpoints, including truck driver, warehouse manager, operations manager, outside sales, purchasing, sales manager, and regional manager. Gene joined Columbia Pipe in 1998.

Living in the Milwaukee area, Gene enjoys bird hunting. Running his dogs and Motorcycle riding . He has been married for 28 years and has one son..

Mike Parker manages our contractor relationships in northwest Illinois, which includes the Rockford location. He entered the industry in 1977 with Mott Bros. and joined Columbia Pipe in 1996 when Mott Bros. was acquired by Columbia Pipe. His personal area of expertise is commercial plumbing and he manages an extremely experienced and diverse inside/outside sales team.

Mike has lived in the Rockford area most of his life and lives an active lifestyle of working out and running with his Labrador, Parker. He also enjoys golf, sport fishing, and is an avid Packers & Cubs fan!

Scott Jensky is the Columbia Pipe regional manager for our locations in Appleton, WI and Wausau, WI as well as Menominee, MI. Scott has an Associate’s Degree in Instrumentation & Controls. He began his career as a driver for Bertsch Company in 1986, were he worked his way into outside sales. He joined Columbia Pipe in 2003 and helped bring the company into Northern Wisconsin and the Upper Peninsula of Michigan.

Scott has three daughters and two sons. He lives in Green Bay with his wife Stacey. An avid Green Bay Packer fan, Scott enjoys collecting and displaying Packer memorabilia.

Bo Cleveland is our regional manager for central Illinois, Peoria, and Decatur. He has close to 30 years of experience in the business and is celebrating 20 years with Columbia Pipe. Bo was one of four people who established our Peoria location and has been providing service plus solutions to central Illinois ever since.

During his college days, Bo played baseball at the University of Louisville. Today, he lives outside of Peoria with his wife and they have two children. He enjoys playing golf, being outdoors and watching sports.

John Wadlington is the Columbia Pipe Industrial Segment Manager for the Chicago Metro area and northern Indiana region He works closely with his salesman and customers to provide solutions and help reduce costs through process improvements. John started in the industry in 1983 after attending Rock Valley College and Illinois State University. He joined Columbia Pipe in 1999 as Operations Manager after more than 15 years with J.D. Mott/Thrall Distribution in sales and engineered products.

John lives in Oak Park, IL and has two children. He enjoys spending his free time up at the lake in central Wisconsin.

Bill Zuidema is the Columbia Pipe & Supply Regional Manager for Michigan’s Lower Peninsula. A 25-year industry veteran, he has managed three different regions within the state of Michigan in over 15 years with Columbia Pipe. A hands-on guy, Bill assists customers from every angle. He helps assess orders up front, hosts training sessions, and goes onsite to troubleshoot difficult applications.

Bill enjoys spending time with family and friends and spends his free time traveling and attending sporting events throughout the year.

Mike is the Industrial Regional Manager for Northern Illinois and Southern Wisconsin. He graduated from Illinois State University in 1996 with a Bachelor of Science degree in Speech Communication and started with Mott Bros. Company that same year. One month after Mike started his job, Columbia Pipe acquired Mott Bros. Company and Mike began his career with Columbia Pipe.

Mike lives in Roscoe, IL with his wife, Jessica, and two daughters, Lauren and Holly. He enjoys fishing, golfing, watching all kinds of sporting events, and spending time with family and friends.

Paul started his Minnesota supply house career as a truck driver in 1988 and has been employed by a few major manufacturers in the industry over the years. He has run plumbing and mechanical distribution locations in eight different U.S. states, based in Minneapolis, MN, Phoenix, AZ and Atlanta, GA. Paul and his wife have lived in eight different homes in their 24-year marriage. They have three children.

Paul enjoys spending time with family and friends socially, and spends most of his weekend time around the Minneapolis chain of lakes. He enjoys cooking and checking out the latest restaurants in the Twin Cities area.

Since 2013, Keith Lellinger has been the Columbia Pipe regional manager for the Plumbing Plan & Spec division of the Chicago area. Prior to joining us, Keith owned his own wholesale supply company specializing in commercial plumbing and design. With over 30 years in the industry, Keith brings experience and knowledge to help the contractors achieve their goals.

Keith and his wife Anne, also a Columbia Pipe employee, live in the western suburbs with their two dogs. Keith also has four children and two grandsons. He enjoys saltwater fishing in Florida.