Position: General Manager
Email Address: stucker@wrd.org

Stephan is a successful program management director and mechanical engineer with more than 34 years of experience managing significant projects. 

Position: Assistant General Manager
Email Address: rbeste@wrd.org

Rob Beste has worked in the field of water resources engineering, water operations, and planning for nearly 25 years.  He has wide ranging experience…

Position: Chief Financial Officer
Email Address: gblack@wrd.org

Greg Black has over 35 years of experience working with utilities in the public and private sector. This includes executive management positions with…

Position: Manager of Administration and Human Resources
Email Address: dhidalgo@wrd.org

Dina J. Hidalgo currently serves as the Manager of Administration and Human Resources at the Water Replenishment District.  Dina joined the district…

Position: Manager of Data and Technology Services
Email Address: elue@wrd.org

Evan joined WRD's Data and Technology Services (DTS) department in 2018. He is responsible for coordinating cross-functional DTS staff in the…

Position: Manager of Engineering
Email Address: eowens@wrd.org

Eric Owens holds a B.S. degree in Chemical Engineering from the University of California at Berkeley, and is a registered professional engineer in…

Position: Manager of External Affairs
Email Address: amancillas@wrd.org

Angie Mancillas joined the Water Replenishment District in 2016 and currently serves as the Manager of External Affairs.  In her role, she leads the…

Position: Manager of Hydrogeology
Email Address: bpartington@wrd.org

Brian Partington manages the hydrogeology department at the Water Replenishment District.  He is responsible for providing technical analysis, review…

Position: Manager of Watermaster and Water Resources
Email Address: erojas@wrd.org

Esther Valle Rojas is the Manager of Watermaster & Water Resources. In her role, she acts as the Watermaster (Administrative Body) for the Central…

Position: Accounting Supervisor
Email Address: Bbui@wrd.org

Binhyen Bui currently serves as the Accounting Supervisor at the Water Replenishment District. Binhyen (Yen) manages and oversees accounting…

Position: Water Operations Superintendent
Email Address: tknoell@wrd.org

Tom Knoell is the Water Operations Superintendent for the Water Replenishment District where he oversees the water treatment facilities and…