Roberto Macias is a Plant Manager with the San Antonio Water System at the Twin Oaks/Aquifer Storage & Recovery Facility. He has over 32 years of experience working in the water and wastewater arenas. He has worked all over Texas, and even ventured into Mexico, during a brief stint in the private sector. He is a member of the AWWA and WEF. Macias is a TCEQ class “A” wastewater treatment operator and a TCEQ class “B” water treatment operator.