Theresa Lee, the incumbent on the Walnut Valley Water District Board of Directors for Division 3, is seeking re-election in the Nov. 3, 2026, California general election. The nonpartisan race has one other certified candidate: Kenny Shu.
Lee lives in Diamond Bar. She has served on the board since Jan. 19, 2016, according to the district's website. She holds the title of assistant treasurer on the board. Her current term began in November 2022 and runs through December 2026.
The five-member Walnut Valley Water District board oversees water delivery and infrastructure decisions for the district. Division 3 voters will choose between Lee and Shu on the November ballot.
Candidate information
- Residence: Diamond Bar, California
- Party: Nonpartisan
- Education: Bachelor's degree in biology, University of Southern California
- Professional background: Owner of a customs brokerage company; member of the Foreign Trade Association and the National Customs Brokers & Forwarders Association of America
- Community involvement: Volunteer with the United Abacus Arithmetic Association, the Chinese Institute of Engineers at Southern California, the Diamond Bar Chinese American Association and the Guitar Foundation of America
Experience and public service
Beyond her Division 3 board seat, Lee has taken on several roles in regional water governance, according to the district's website. She serves as a Region 8 delegate to the Association of California Water Agencies and as a Property Program Committee member for the Association of California Water Agencies / Joint Powers Insurance Authority.
Within the Walnut Valley Water District, Lee chairs the Finance Committee. She also serves as a commissioner at the Puente Basin Water Agency and as an alternate member of the Executive Committee at the Spadra Basin Groundwater Sustainability Agency.
On the issues
Lee outlined three priorities on her campaign website:
Water infrastructure: Lee said she wants to modernize aging infrastructure and prevent costly failures within the district.
Water quality and drought preparedness: Lee said she aims to protect water quality and prepare for drought and changing supply conditions.
Water rates and fiscal planning: Lee said she wants to keep rates affordable through responsible long-term planning.
Her campaign site did not provide specific dollar figures, timelines or detailed implementation plans for these priorities.
Policy positions attributed to Lee's campaign website reflect the candidate's own statements.
