Frank Pierson


Commissioner Pierson is a long time resident of the Spokane area, becoming a resident of the Spokane Valley and what would become Spokane County Water District #3 in 1983. Frank graduated from Lewis and Clark High School and completed a degree in business marketing from Eastern Washington University. Commissioner Pierson spent the early years of his career with the Boy Scouts of America working with the high school age group in Everett WA and Honolulu HI. Family proved the motivation to return home to Spokane where he joined a construction firm. His career development led to entrepreneurial challenges where he started and ran several businesses in the Spokane Valley before recently retiring

When Frank first came to the district in 1989 his goals were the same as they are now; to provide a safe source of water, to maintain and improve an aging infrastructure and to keep price increases minimal for the people of the district.

Mary Wissink


Mary Wissink is a life-long resident of Spokane. She was first elected to the Spokane County Water District #3 Board of Commissioners in 2011 and just started her second term as a Commissioner. Commissioner Wissink has a paralegal background whose legal experience includes having worked as a judicial assistant for a Superior Court Judge for twelve years. She has a degree in Public Service Administration. Her philosophy emphasizes organizational management, and she believes in leveraging technology to maximize efficiency for the benefit of the citizens and businesses in the Water District. Commissioner Wissink has volunteered for a number of non-profits and served in various official capacities. She lives in the Town and Country Neighborhood with her husband Tom and their three dogs and a spoiled cat.

Nathan Jeffries


Spokane County Water District No. 3 Commissioner Nathan P. Jeffries was elected to the Board in December of 2017. Commissioner Jeffries was born and raised in the Spokane area. He graduated from Mead High School and then went on to college at Eastern Washington University where he graduated with a degree in Business Administration. Commissioner Jeffries has lived in Water District #3 since he was 9 years old.

Currently, Commissioner Jeffries is the Division Chief of Operations for Spokane County Fire District #9 where he has worked for the last 15 years. Prior to this, he worked for a local company owned by his family that designed and installed underground irrigation systems.

Commissioner Jeffries enjoys traveling the country and the world to experience new cultures. He lives with his partner in the Mead area.