Stephan Tucker, General Manager of the Water Replenishment District (WRD), details the district's core mission of safeguarding groundwater quantity and quality across southern LA County. Established in 1959 to combat depleted groundwater basins and seawater intrusion, WRD collaborates closely with the Metropolitan Water District (MWD) and local agencies to replenish the Central and West Coast Groundwater basins using a mix of stormwater and recycled water, thereby reducing dependence on imported water sources. In this exclusive interview, Tucker provides in-depth insights into key projects, notably the ongoing expansion of desalination facilities aimed at purifying groundwater, supported by federal grants and strategic partnerships. He also discusses the district's strategic vision for achieving long-term water supply sustainability, navigating construction challenges, and managing economic implications within the region's water infrastructure landscape. Throughout the conversation, Tucker emphasizes the critical importance of public awareness regarding groundwater's pivotal role in ensuring reliable water supply and maintaining cost-effectiveness across Southern California, painting an optimistic outlook for the region's water future.