Dean Willis, P. E.

Chariman of the Board, Civil Engineer

Mr. Willis is the Chariman of the Board of Allgeier, Martin and Associates, Inc. and also Director of the company’s Civil Division. In addition to his administrative duties, he is responsible for the engineering management of wastewater and water projects, including preparation of studies, development of design drawings and contract documents, contract administration, and serving as a liaison with regulatory agencies.

Mr. Willis has been with the firm since his graduation from college with a Master of Science degree in 1976. He has been actively involved in a number of large and small civil engineering projects, and has established himself as a leader in the field of wastewater treatment for municipal and industrial clients.


  • 417.680.7320


  • Master of Science
    • Sanitary Engineering
    • Iowa State University
  • Bachelor of Science
    • Civil Engineering
    • Iowa State University

Professional History

  • Allgeier, Martin and Associates, Inc.


  • Professional Engineer
    • Missouri
    • Kansas
    • Oklahoma
    • Arkansas


  • National Society of Professional Engineers
  • Water Environment Federation
  • American Waterworks Association
  • Missouri Water and Sewerage Conference


  • Water Planning & Design
  • Wastewater Planning & Design
  • Rate Studies
  • Contract Administration