L.A. County captures record 120 billion gallons of stormwater, boosting local supply

Los Angeles County agencies captured more than 120 billion gallons of stormwater during the latest wet season, marking a significant milestone in regional water management and supply resilience. The total—driven by a series of strong storm events—highlights the growing role of stormwater capture infrastructure in supplementing imported water and recharging local groundwater basins. According to regional updates, captured runoff is directed to spreading grounds and infiltration systems operated by the county, where it percolates into aquifers for later use.

The achievement underscores the impact of long-term investments through initiatives like the Safe Clean Water Program, which prioritizes multi-benefit stormwater projects that reduce flooding, improve water quality and increase local water supply. Recent estimates suggest the captured volume could supply millions of residents annually, reinforcing stormwater’s value as a drought-resilient resource.