Administrative Staff


Brian Weber
District Manager

About Brian:

Brian first worked for the District in 2005 as a seasonal catch basin driver.  He subsequently worked as a Vector Control Technician and as Assistant Manager before being promoted to Manager in 2020. Brian holds an Associate of Arts from the College of San Mateo and a Bachelor of Arts in Liberal Arts from San Francisco State University. 

Born and raised in the city of San Mateo, Brian has been a county resident his entire life.  He enjoys serving his community and ensuring county residents have a higher quality of life.


Mary Leong

About Mary:

Mary is the District’s accountant

Contact Information:

Office: (650) 344-8592 x45

Fax: (650) 344-3843


Richard Arrow
Finance Director

About Richard:

Richard S. Arrow is a 37 year veteran in local government.  He has served in numerous positions ranging from staff accountant, County Auditor-Controller, Finance Director, and Chief Financial Officer for cities and counties.  He has extensive experience in accounting, auditing, financial reporting, debt management and budget and general government operations.


Devina Walker
Office Administrator

About Devina:

Devina began her career with the District in 2010. As the Office Administrator, she receives incoming calls, greets the public, and works closely with the database.

Away from work, Devina enjoys traveling, shopping, and spending quality time with family and friends.


Paul Weber
Facility Maintenance Technician

About Paul:

Prior to coming to the District as a seasonal technician in 2010, Paul worked for the City of Millbrae in Landscape Maintenance and as a Plant Mechanic in Water Pollution Control.