What is the Emergency Storage Project (ESP)?

The Emergency Storage Project is a major part of the Water Authority’s Capital Improvement Program (CIP). The ESP is a system of reservoirs, interconnected pipelines, and pumping stations designed to make water available to the San Diego region in the event of an interruption in imported water deliveries.

The Emergency Storage Project will add 90,100 acre-feet of water storage for emergency use and will:

  • Provide up to six months of emergency water storage in the San Diego region
  • Establish emergency water storage at Lake Hodges, and the Olivenhain and San Vicente reservoirs for use throughout the county
  • Expand the pipeline system to allow region-wide emergency water distribution