Andrew D. Wiesner, P.E.  is the General Manager of the Serrano Water District, a role he was appointed to in March 2026. Andrew is an experienced engineering professional with a background in water systems design and management. He holds a Bachelor of Science in Chemical Engineering from the Georgia Institute of Technology and a Master of Science in Environmental Engineering from the University of Texas at Austin.

Andrew began his career as an engineering consultant where he spent 14 years providing technical expertise and project leadership for water and wastewater treatment plant planning and design projects. During this time Andrew developed a strong foundation in planning, design, regulatory compliance, and construction of public works projects while working with many public agencies and stakeholders.

Andrew later served as District Engineer for Mesa Water District for five years, managing engineering operations and overseeing capital improvement projects and system planning. In this role, Andrew played a key part in executing a $70 million dollar capital improvement program that constructed two new groundwater wells, rehabilitated two reservoir pump stations, constructed two reservoir management systems, replaced 80 mainline valves, and installed over two miles of pipeline. Following the completion of the $70 million dollar capital improvement program, Andrew oversaw the development of the water system master plan that developed the capital improvement program for the next ten years at the District.

In his personal life, Andrew enjoys spending time with his family, coaching his daughter’s soccer team, and running.

With nearly two decades of experience, Andrew brings a practical and collaborative approach to water system management, focused on delivering sustainable solutions and supporting community needs. He is excited to bring this experience to his new role as the General Manager at Serrano Water District to help continue the success of the District.