Columbia Winnelson Co is a complete full service plumbing wholesale supply company and is open, not only to Plumbing Contractors, Mechanical Contractors, Government and Medical businesses, but to individual homeowners. 

  Columbia Winnelson Co was opened in 1992, at the present location 607 Nebraska Avenue, by three enterprising men, Ralph Mueller, Terry Humphreys, and Marty Shaw.   Columbia Winnelson Co was opened in 1992, at the present location 607 Nebraska Avenue, by three enterprising men, Ralph Mueller, Terry Humphreys, and Marty Shaw. 

  In 2017, John (Mike) Franken took over as President of Columbia Winnelson Company. Mike started with Columbia Winnelson in 1994 and after learning about the company, moved to Rolla Missouri, where he started the Rolla Winnelson Company.  Mike is very knowledgeable about the industry and is always ready to help customers.

​ We currently have eight employees, who are FRIENDLY, KNOWLEDGEABLE, CUSTOMER ORIENTED, and HARDWORKING.  We are dedicated to our customers and if we don't know the answer to a question, or have a particular item in stock, we will search until we find the answer or solution for you, or get the item ordered and delivered to you.  

   Although Columbia Winnelson Co is a locally owned and operated company, we are part of the larger WINSUPPLY organization.  WINSUPPLY consists of independently owned companies held together by the philosophy of opportunity, responsibility, and pride in what you do.  The WINSUPPLY organization offers support and a communication network for all of the WIN companies.  


Columbia Winnelson Co
607 Nebraska Ave.
Columbia, MO   65201

Phone: (573) 874-7141
Fax:     (573) 874-7923

Hours:  7:00 a.m. to 4:30 p.m.
Monday through Friday