Board of Directors

WVWD is governed by a five-member Board of Directors who are elected to overlapping four-year terms in even-numbered years. The District has five separate election divisions, each represented by a director residing in, and elected by the voters of the election division. The Board of Directors are responsible for setting District policy and establishing long-range goals to ensure efficient and effective operations of the WVWD water system. Pursuant to California Water Code Section 20202, the Board of Directors is entitled to review and set Board member compensation on an annual basis. The Board of Directors have not increased their compensation since April 2006, and, prior to that date, the last change was in June 1984. The current compensation for the District’s Board of Directors is a maximum of $150 per meeting per day, not to exceed seven meetings per month.

Elections are held on the first Tuesday in November on even numbered years. Board Member terms overlap, three positions are open at one election and two positions are open at the next election two years later. Appointments to the Board are made as necessitated by a resignation or other incidental vacating of a Board position. The Board may make an appointment to fill the vacancy, call a special election, or defer to the County, subject to law. For more Election Information, click here:

Edwin M. Hilden

Division II
N. Diamond Bar
Nov 2022 - Dec. 2026
(909) 595-7554 ext. 201

Mr. Hilden has been a resident of Diamond Bar since 1966, a Walnut Valley District Board of Director since August 2002, and is a Certified Financial Planner. He obtained his Certified Financial Planning® (CFP) and Accredited Asset Management Specialist (AAMS) designations from the College for Financial Planning in Denver, CO.

Mr. Hilden currently serves as a Director of the District. In addition, he is a member of the District’s Personnel Committee and an alternate member of the Public Information Committee. Mr. Hilden is an Alternate Commissioner of the Pomona-Walnut-Rowland Joint Water Line Commission, a representative to the Three Valley’s Municipal Water District, an alternate board member of the Association of California Water Agencies Joint Powers Insurance Authority (ACWA/JPIA), and a ACWA voting delegate.

Mr. Hilden has completed extensive education and training through the California Special Districts Governance Academy in the areas of Governance Foundations, Setting Direction and Community Leadership, The Board’s Role in Finance and Fiscal Accountability, and The Board’s Role in Human Resources. As a long-time Diamond Bar resident, he has served the local community through his active involvement in several community service activities and organizations for many years. The successful “Shop Diamond Bar” slogan and program was launched during his Presidency at the Diamond Bar Chamber of Commerce in 1989. Mr. Hilden served in the United States Air Force from 1952-1961, as a member of an air crew.

Theresa Lee

Division III
S. Diamond Bar
Nov. 2022 - Dec. 2026
(909) 595-7554 ext. 201

Ms. Theresa Lee, a resident of Diamond Bar, was sworn in as a Walnut Valley Water District Board of Director on January 19, 2016. Ms. Lee is currently the WVWD Board President. She also serves as Chair of the District’s Finance Committee, Chair of the District’s Personnel Committee, alternate member of the District’s Engineering Committee, and member of the District’s Succession Ad Hoc Committee, and New Building Ad Hoc Committee. Director Lee additionally serves as Commissioner of the Puente Basin Water Agency, alternate member of the Spadra Basin GSA Executive Committee, an ACWA Region 8 Delegate, and an ACWA/JPIA Property Program Committee member.

Ms. Lee is the current owner of a customer brokerage company and is a member of the Foreign Trade Association and the National Customs Brokers & Forwarders Association of America. She holds a Bachelors’ Degree in Biology from the University of Southern California.

Ms. Lee has been and remains very active in many community service organizations. Some of the associations in which Ms. Lee volunteers her time include 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.

On a personal note, Ms. Lee is married and has two children.

Scarlett Kwong

First Vice President
Division V
W. Covina/
Diamond Bar
Nov. 2020 - Dec. 2024
(909) 595-7554 ext. 201

Ms. Kwong holds a Bachelor of Science degree in Math/Computer Science from the University of California at Los Angeles. She was formerly a Project Engineer/Planning and Budget Manager in aerospace companies developing software systems for NASA Satellite Systems, and later, for Commercial Airline’s In-Flight Entertainment Systems.

Ms. Kwong was elected to the WVWD Board of Directors in 2007 and currently serves as First Vice President. In conjunction with her duties on the Board, she chairs the WVWD Public Information Committee, is a member of the Engineering Committee, and is an alternate member of the Personnel Committee. Ms. Kwong represents the District as a Commissioner of the Pomona-Walnut-Rowland Joint Water Line Commission, an alternate member of the Puente Basin Water Agency (a Joint Powers Authority of Walnut and Rowland Water Districts), and as the District’s SGV Regional Chamber of Commerce representative.

A Diamond Bar/Walnut resident since 1998, Ms. Kwong is active in many school and community organizations. She served as the President of the Chinese-American Elected Officials (CEO) Association 2017-2019 and has served on the Miss Diamond Bar Scholarship Pageant, Inc., Board of Directors since 2007. In 2017, Ms. Kwong received a CIE-USA Centennial Medal for her service to the Chinese Institute of Engineers – Southern California Chapter where she served as Chapter President 2013-2015.

Jerry Tang

Second Vice President
Division I
Nov. 2020 - Dec. 2024
Division I - Walnut
(909) 595-7554 ext. 201

Mr. Jerry Tang, a Walnut resident since 1993, represents Division I on the Board of Directors. He was officially sworn into office on February 15, 2019, and currently serves as the District’s Second Vice President. In addition, Director Tang serves as a member of the District’s Public Information Committee, Finance Committee, and the Debt Ad Hoc Committee. Furthermore, he serves as an Executive Committee Member of the Spadra Basin GSA Executive Committee.

Mr. Tang is an Environmental Scientist in the Technical Services Department of the Sanitation Districts of Los Angeles County (Sanitation Districts). His primary responsibilities include assessing and reporting on sediment conditions, tissue bioaccumulation, and seafood safety monitoring results from the Palos Verdes Shelf (PVS). Mr. Tang is also the project lead for sediment coring activities and represents the Sanitation Districts in the USEPA’s PVS Technical Information Exchange Group and the PVS Institutional Controls Program: Fish Contamination Education Collaborative. Additionally, he represents the Sanitation Districts on the State Water Resources Control Board’s Stakeholder Advisory Group for the development of Sediment Quality Objectives. Mr. Tang has also participated in the Southern California Bight Regional Monitoring survey led by the Southern California Coastal Water Research Project (SCCWRP) since 1994 and provides his technical expertise to the State of California Bioaccumulation Oversight Group.

Mr. Tang holds a Bachelor of Science degree in Chemistry from the Chung-Yuan Christian University in Taiwan and a Master of Public Health degree in Environmental Health Science from the University of California, Los Angeles.

Mr. Tang is very active in many community organizations. He is a lifetime member of the Southern California Chinese-American Environmental Protection Association and an active member of the Chinese Institute of Engineers Southern California Chapter. Mr. Tang has attended the Rowland Heights Community Christian Church since 1998 where he has held multiple leadership roles during his time there.

Henry Woo

Assistant Treasurer
Division IV
Rowland Heights
Feb. 2023 - Dec. 2024
Rowland Heights and a portion of South Diamond Bar
(909) 595-7554 ext. 201

Mr. Henry Woo was sworn in as a Walnut Valley Water District Board of Director on February 13, 2023.  He has lived with his family in Rowland Heights since 1980. He received his Bachelor of Science and Master of Architecture degrees from Cal Poly Pomona. In conjunction with his duties of the Board, he serves chair of the District’s Engineering Committee and alternate member of the Finance Committee and member of the Puente Basin Water Agency, Alternate representative to the Three Valley’s Municipal Water District, ACWA voting delegate, and ACWA Region 8 alternate delegate.

Mr. Woo retired from his architecture practice of over 35 years in Diamond Bar/Walnut area.  In addition to managing his architecture practice, Mr. Woo has been serving on many business and professional as well as community organizations, including the Asian American Architects & Engineers from 1988-98, and President of Chinese American Construction Professionals (CACP) 2002-03.  Among his many contributions in the Asian and local communities, he had donated effort for the preliminary design of the Chinese Heritage Museum in LA Chinatown.  He volunteered as planning consultant for the early proposal for Youth Science Center in Hacienda Heights. To promote the interest in architecture for future generations of students, he has consistently provided summer internship, mentorship, and scholarships for college-bound high school students as well as mentoring for the architecture programs of Cal Poly Pomona.

Consistent with his interest of serving the local communities. Mr. Woo has supported numerous local activities, school foundation programs such as serving on the Walnut Valley Education Foundation, Rowland USD FORUS Foundation, and community events like the annual Rowland Heights Buckboard Day throughout past two decades. In 2006, Mr. Woo began serving as a board member in various roles for the Rowland Heights Community Coordinating Council.  In 2020, Mr. Woo was the recipient of a Congressional Award ~ Asian American Pacific Islander Trailblazer Award. 


Walnut Valley Water District Board meetings are held on the third Monday of each month at 5:00 p.m.
Walnut Valley Water District Workshop meetings are held on the third Thursday of each month at 4:00 p.m.
All meetings are held in the District Board Room. Please note, subsequent adjustments may be made at the Board’s discretion and in accordance with the Brown Act.

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