Water scarcity is a big problem in dry areas like California, especially with more frequent droughts expected due to climate change. To tackle this issue, researchers are looking into using treated wastewater as a reliable and eco-friendly local water source. Groundwater depletion and quality issues are a concern, so alternative water supplies like desalination are being explored. By evaluating different wastewater treatment technologies, the goal is to improve local water supply reliability and resilience to drought and climate change.