What is WIN?

More than a decade ago, the Water Replenishment District of Southern California (WRD) set out on a monumental mission - to replenish the region's groundwater basins without using a single drop of water imported from Northern California's Bay Delta or the Colorado River. The semi-arid climate of WRD's service area, which covers the southern half of Los Angeles County, is populated by more than four million residents and groundwater accounts for nearly 50% of the region's drinking water demand. This demand for fresh water vastly exceeds nature's ability to replenish these groundwater basins on its own.

In 2003, WRD's Board of Directors began the Water Independence Now (WIN) program to protect the security of the region’s groundwater supplies. WIN is not a single program or project, rather WIN is a suite of projects aimed to maximize local stormwater and recycled water sources to replenish, preserve and protect two of the most utilized urban groundwater basins in the nation. Historically, a large percentage of imported water was used to replenish groundwater basins in the WRD service area. However, through the implementation of components of the WIN program to date, WRD has significantly reduced its dependence on imported water and is on-track to be completely independent of imported water by 2018.

     Key WIN Projects include:

The Groundwater Reliability Improvement Project (GRIP)

GRIP Turnout Structures

The Leo J. Vander Lans Advanced Water Treatment Facility Expansion

The Whittier Narrows Conservation Pool Enhancements

Increased Recycled Water Purchases for Spreading and Injection