Board of Directors



President, Robert Ruhstorfer, Culligan Water Conditioning, Dallas, TX - Term 6/23

Robert (Bob) Ruhstorfer began his career in the water treatment industry in the 60’s working for his father in the family business in Marlette, MI. (Yes it is a small world, the Miller family were their neighbors!) His dad often told him; “Bob, if a job is worth doing at all, it is worth doing right.” This has been Bob’s guiding philosophy in business. He virtually worked his way up through the business by working at every job there is. Starting off as an installer’s helper and delivering salt to eventually running the family business.

In 1984 he went on to work for a major water treatment manufacturer in Chicago not far from the Culligan headquarters. First as a Regional Manager in the Great Lakes Region then as National Sales Manager and in 1998 he became its President.

He has also served as President of the Water Quality Association, 2002-2003 and currently serves on the Board of Directors of the Water Quality Research Foundation. In 2007 Bob was awarded WQA’s International Award of Merit and in 2009 he was awarded their Lifetime Achievement Award for his service to the industry.

He tried retirement back in 2008 but, it didn’t’ take. Bob said; “I have worked alongside and next door to the Culligan Man my entire career and have always been impressed by the quality of the brand and quality of their dealers. I consider many of them personal friends and I believe the Culligan brand holds a unique position of being the undisputed No. 1 brand in the industry for as long as anyone can remember. So, when the opportunity presented itself to become a Culligan Man and run and own the franchises in Dallas & Houston, it was a no brainer!”

He resides in Glen Ellyn, IL with his wife Joannie (when he isn’t in Texas) and has five children and six grandchildren.

Vice President, Steve Gibson, Culligan - Kendallville, Valparaiso and Mishawaka, IN Term – 6/24

Steve began his career as a Culligan Man in 1986 when he was hired as a sales representative in the Kendallville, Indiana dealership. In 1992, he was promoted to Sales Manager. In May 1999, Steve purchased part ownership in the dealership being promoted to Vice President/ General Manger. In April 2003, Gibson purchased the remaining interest of the company and became sole owner. Since then, the dealership has purchased additional Culligan dealerships and competitors. 

Gibson has served as President of the Tri-State Culligan Dealers Association serving Indiana, Michigan and Ohio. He has also served as President of the Indiana Water Quality Association (IWQA).  Presently, Gibson serves on the Culligan Marketing Sub Committee (MSC) and as a Board Member of CDANA.

Treasurer, Cameron Karger - Culligan Quality Water of North Central Ohio, Mansfield OH - Term 6/22

Cameron is President of Culligan Quality Water of North Central Ohio. The dealership is located in Mansfield, Ohio and services 5 counties in the North Central Ohio area. In 1992, Cameron earned a BS in Criminal Justice from Tiffin University and graduated from the Tiffin University Police Academy. He is a 2nd generation Culligan Man and started working for his parent's dealership in 1993 as a manager of an office in Medina, OH. Soon after, he moved to Mansfield, OH and became the office manager. Over time, he moved into the role of Operations Manager and Controller which included performing all the accounting duties of the company, which at the time also included the Wooster, OH franchise. In 2000, he served as President of the Culligan Tri-State Dealers Association, which is now a chapter of CDANA.

In January 2016 he and his wife Traci, purchased the Mansfield Franchise from his parents Donald & Roberta Karger. His wife and business partner, Traci, helps with marketing plans for the business. Cameron and Traci live in Mansfield, Ohio with their two sons, Addison (16) and Aidan (11). Cameron is an avid home brewer and belongs to the Mansfield Home Brew Club. He also loves hunting and camping. 

First Past-President, Robert Boerner - Culligan Southwest, Inc., San Antonio, TX – Term 6/25

Bob Boerner, President of Culligan Southwest, Inc., co-owns and operates with his sister, Kristi Stanford, four Culligan dealerships in Texas. He has been involved with Culligan since1977, learning the business from his father, Gib Boerner, and helping to carry on the Culligan tradition from its first dealer, his grandfather Wilbur L. Walton. Bob has been involved in theTexas WQA for many years, serving as its President in 1996-97and currently serving as its Legislative Co-Chair. He served on the WQA Board of Directors for 9 years and continues his involvement with them in various capacities. Bob and his wife, Debrah, have a daughter, Holly, who recently completed a Masters degree at the Harvard Graduate School of Education.



Mike Bannister, Culligan of Tulsa, Tulsa, OK - Term 6/23

Mike Bannister is Owner and CEO of Culligan of Tulsa. After graduating from Fort Hays State in 1978 with a degree in Marketing and Finance, Mike immediately joined the service industry. He worked in the metals industry, oilfield group and propane industry before joining Culligan 32 years ago as a District Manager. In August of 1993, Mike bought the Tulsa dealership and officially became a Culligan dealer. As he once told his wife, we may die of hunger, but we will never die of thirst! Mike is currently a DAC member proudly representing District 3.

Hugh Grout, Eastern Ontario Water Technology LTD., Canada - Term 6/22

Hugh Grout, President of Eastern Ontario Water Technology LTD, co-owns and operates 6 Culligan dealerships located in Eastern Ontario and Western Quebec. Hugh holds a Bachelors of Arts Degree majoring in economics.  Hugh is a 3rd generation Culligan Man who has been involved in this family-owned and operated business since 1982. Over the past 9 years, Hugh has sat as the Canadian Representative on the Culligan Dealer Advisory Council, where he served as the New Products Task Force Chairman. Hugh currently resides in Navan, Ontario with his four children, ages 16 to 21.

CR Hall - Hall's Culligan, Wichita, KS - Term 6/25
Second generation dealer and sole owner of Hall's Culligan. Hall's Culligan has 37 dealerships in ten states with headquarters in Wichita. In addition to water treatment, he also owns Prairie Fire Coffee, which has eight locations in Kansas, Oklahoma, Missouri and Nebraska.

CR is a Past President of CDANA, Executive Board member is IBWA, Member of the downtown Wichita Rotary Club, member of leadership council of the Greater Wichita Partnership, Past President of WQA and a member of the Young Presidents Organization in Kansas.

CR enjoys spending time with his two sons, Jack (23) and Carson (19) as well as his significant other, Lindsay McClellan, who also serves as a key consultant/advisor to his businesses. Lindsay has three children: Stratton (16), Samantha (16), and Walker (12) who also bring much joy to the family. 

Mike Karr, Northeastern Water Services, Inc. Endicott, NY - Term 6/23

Mike began his Culligan career as a Route Salesman for the Hall’s group in 1997 in Wichita. During his time in the Hall’s group Mike held several positions including General Manager first in Joplin, MO then in Rogers, AR. Being a NY native, Mike left Arkansas in 2007 to manage Doug Windover’s dealerships in Endicott, NY, Syracuse, NY, and Scranton, PA., eventually purchasing them in January 2012.

Mike is currently a member of the BW Sub Committee and has previously served on the Board of Directors for EWQA. Mike resides in Apalachin, NY with Wife Carrie and daughter Madison.

Don Meredith - Meredith’s Culligan – Union Grove, WI – Term 6/22

Don is a second-generation Culligan dealer and operates two dealerships in two states, Wisconsin and Illinois.  After graduating from University of Wisconsin- Whitewater while also serving in the Wisconsin Air National Guard, he took a position in the insurance industry.  In 1980, he returned to the water treatment business. He purchased the Union Grove dealership in 1985. Don has served as President of the Water Quality Association of Wisconsin, Culligan Dealers Association of Wisconsin, Union Grove Chamber of Commerce and is currently on other local boards.  Don has served on the DAC as the Wisconsin Representative, as the SAC Chairman and as the Commercial Subcommittee Chair. Don has served as President of CDANA. Don and his wife, Cherie, have three children, Heather, Matt and Luke.

David G. Miller - Cleanwater Corporation of America, Marlette, MI – Term 6/25

Executive Vice-President of Cleanwater Corporation of America, operating dealerships in Marlette, Michigan; Allegan, Michigan; Port Huron, Michigan; Flint, Michigan; La Crosse, Wisconsin; Brighton, Colorado; and Anderson, Indiana.

He is a third generation Culligan Man having served as director of the Tri-State Chapter of CDANA, Past President of the Michigan Culligan Association, and past president of the Michigan Water Quality Association. Has served as the Michigan Regent to WQA (CWS-V), Secretary/Treasurer of Michigan Culligan Association, and is a member of the Culligan One 20 Group.

David has been on the CDANA Board since 2008 and has served as President. David and wife Carla reside in Marlette and enjoy time with their two children.


Justin Rupert, Culligan - Albion & Hillsdale, MI - Term 6/24
Justin Rupert  is the General Manager of Rupert’s Water Conditioning in Albion, MI. He has been working in the family business for four years. Justin started out in sales, and moved to GM of our Albion location in 2015. He enjoys working alongside his parents (Renne and Dennis) and wife (Mackenzie.) 

Kourtney Tarvin-Erbes, Culligan - Bloomington, IL - Term 6/24

Kourtney is the Vice President and General Manger of the Culligan Water Dealership in Bloomington, Illinois. Kourtney holds a bachelor of Science Degree from Illinois State university. Kourtney is a 3rd generation Culligan Woman following in John and Richards footsteps. She joined the business in 2003, and after graduation from ISU, worked at State Farm for 3.5 years before returning to Culligan in 2012 in a management role. Since returning to the business, Kourtney sits as a member fo the Marketing Subcommittee, BOB Advisory Board, CDANA Convention Committee, and serves as the Chair of the CDANA Next Generation Committee. Kourtney enjoys spending time with her 2-year-old daughter, Malin.