About MW&L

McMinnville Water & Light Management

General Manager

John Dietz

John Dietz brought with him more than 25 years of experience in the utility industry when he joined McMinnville Water and Light as Engineering and Operations Manager in 2008.  Before coming to McMinnville, he lived in Longview, WA with his wife and daughter where he spent 20 years at Cowlitz PUD, serving as an Electrical Engineer, then as Director of Engineering.  After spending 8 years as E&O Manager with MW&L, John was promoted to the position of General Manager in 2017.  He currently sits on several boards and committees focused on community development and utility interests including the Public Power Council (PPC), McMinnville Economic Development Partnership (MEDP), Oregon Municipal Electric Utilities Association (OMEU), and the McMinnville Urban Renewal Advisory Committee (MURAC).  John is a licensed electrical engineer and holds a Bachelor of Science degree in Electrical Engineering from Washington State University.

Finance Director

Mark Dunmire

MW&L Attorney

Samuel R. Justice

Mr. Justice is a graduate of Portland State University (B.A.), and Lewis & Clark law school (J.D.). His past legal experience includes being a Yamhill County Deputy District Attorney, and a shareholder in the Haugeberg-Rueter law firm.  He has formerly served as a pro tem circuit court judge and juvenile court referee. He joined Water and Light as General Counsel in 2017.  Mr. Justice has served as secretary of the Yamhill County Bar Association and the McMinnville Lions Club.  He is a former board member of the McMinnville Chamber of Commerce and is past president of the McMinnville Downtown Association.  He is a veteran of both the US Army and US Army reserve.

Electric Division Director

Scott Rosenbalm

A lifelong Willamette Valley resident with strong family ties to McMinnville, Scott grew up in Dallas, OR and started working on farms in Polk and Yamhill counties during high school. Scott moved to McMinnville in 1990 to raise his family. His educational background includes forestry and surveying before beginning his career at McMinnville Water & Light in 1992 as an Apprentice Lineman. After completion of the apprenticeship program, he became a Journeyman Lineman in 1995. Over the years, Scott was promoted to the positions of Crew Foreman, Electric Superintendent and has held his current position of Electric Division Director since 2018. He has been involved with multiple industry and local organizations including: McMinnville Lions Club, Oregon Municipal Electric Utilities Engineering and Operations group, and past President of the Oregon Joint Use Association.

Water Division Director

James Burke

Senior Power Resource Analyst

Jaime Phillips

Office Manager

Jon Spence

Before graduating from Linfield College with a degree in Mathematics, Jon grew up on a farm in Eastern Oregon.  He began with McMinnville Water and Light shortly after in 1999 as a member of the Communications Department.  After some time there, he moved to the IT department before taking the position of Office Manager in 2016. Both he and his wife have enjoyed watching their two boys grow up in the McMinnville community.

Purchasing Manager

Chad Hudson