Staff Leadership

Kristin Masteller, MPA
General Manager

Kristin joined PUD 1 in 2011 and now serves as the District’s General Manager and Chief Administrative Officer. Prior to taking on the role of GM, Kristin was responsible for the District’s administrative operations including human resources, customer service, accounting, communications and public records. Before joining PUD 1, Kristin worked for a public hospital district and was the executive director of the hospital’s charitable foundation.

Kristin earned her Bachelor of Arts degree from Saint Martin’s University and holds a Master of Public Administration degree from The Evergreen State College. She was also named one of Puget Sound Business Journal’s “40 Under 40” influential business leaders in the Seattle/Puget Sound area in 2019.

Katie Arnold
Director of Business Services & District Treasurer 

Katie worked as a consultant for the PUD before permanently joining the team in 2017 as the District Accountant. One year later she was appointed as the District Treasurer by the board of commissioners. In 2020, she was promoted to Director of Business Services and now oversees customer service, finance and human resources. Prior to working for the PUD, Katie worked for a public accounting firm for 12 years as a staff accountant, and then as manager for four years.

Katie earned her Bachelor of Arts degree in Accounting from Western Governor’s University. In her free time, she enjoys spending time with her husband Richard, and sons Blake, Carter, and Teigan.

Brandy Milroy portrait

Brandy Milroy
Water Resource Manager

Brandy began her career at PUD 1 in 2007 as a temporary employee and quickly landed a permanent, full-time position in water mapping.  In 2012, she transitioned into the Engineering Tech – Water role and earned her Water Distribution Manager 1 certification.  Brandy was promoted as the District’s Water Resource Coordinator in 2018 and then again in 2020 to manager of the entire water operations.

Brandy received her associate degree in drafting from South Puget Sound Community College and is currently working to complete her bachelor’s degree in business management.  She grew up in the Midwest but loves the Pacific Northwest, and enjoys spending time with her two young boys, Kyler and Hayden.

Jeremiah Waugh, PE, Engineering Manager

Jeremiah is a seasoned professional with a unique journey in the field of electrical engineering. Formerly a residential electrician, Jeremiah navigated a career shift when the housing bubble burst. Motivated to advance his expertise, he returned to academia, earning a Magna Cum Laude Bachelor of Science in Electrical Engineering from Washington State University.

Since 2014, Jeremiah has been a dedicated engineering consultant, contributing his skills to projects for Mason County PUD #1. To deepen his knowledge of utility-related engineering, he pursued online courses through Gonzaga University, culminating in a Graduate Certificate in Transmission & Distribution Engineering.

In 2019, Jeremiah achieved a significant milestone by obtaining his Professional Engineering License, solidifying his credentials in both Washington and Oregon. His commitment and passion for the field led him to take on the role of Engineering Manager with the PUD in October 2023.

Outside of the professional realm, Jeremiah shares a fulfilling life with his wife Chrystal. They bond over home improvement projects, cherish moments of relaxation during vacations, and find joy in caring for their four dogs – a lively bunch that has seamlessly filled the void left by their son, who recently moved out.