Jason Dadakis, P.G., C.HG

Executive Director of Water Quality & Technical Resources

Jason Dadakis currently serves as the Executive Director of Water Quality & Technical Resources for the Orange County Water District. He is responsible for managing scientific investigations, monitoring, permitting, regulatory compliance, and applied research in support of the District’s groundwater management activities, water quality programs, and water recycling projects, including the Groundwater Replenishment System.

Jason has more than 25 years of environmental and water resource management experience. In his 20+ years at the District, he has also worked as a Hydrogeologist, Senior Hydrogeologist, and Director of Health & Regulatory Affairs. His responsibilities have included groundwater modeling, tracer studies, water treatment research, water quality assessments, review of contaminant risk assessments and toxicology, regulatory compliance reporting, and the permitting of new and expanded recycled water production and recharge facilities.  He currently helps lead the District’s ongoing response to per- and polyfluoroalkyl substances (PFAS) contamination in local groundwater supplies

Jason earned a Bachelor’s degree in Earth Sciences from Dartmouth College and a Master’s degree in Hydrology from the University of Arizona. He is a Registered Professional Geologist and Certified Hydrogeologist in the State of California. 

Jason currently serves as a member of the Board of Trustees and Executive Committee for the California Section of the WateReuse Association (WRCA), chair of the WRCA Potable Reuse Permitting and Compliance Committee, and as Treasurer of the National Water Research Institute (NWRI).  He previously served as President of the Orange County Chapter of WRCA and as President of the Orange County Water Association (OCWA).