What is the Advanced Water Purification Program?


The Advanced Water Purification Program will create a new, local, sustainable and drought proof drinking water supply using state-of-the-art technology to purify East County’s recycled water. This water recycling opportunity would diversify East County’s water supply and reduce our dependence on imported water. If the program moves forward, it will produce up to 30 percent of East County’s current drinking water demands.

Padre Dam – Advanced Water Purification East County

Innovation for the Future:

Inspired by the Past


Padre Dam has been a leader in recycled water for over 50 years. The water recycling process began in Santee in the late 1950’s followed by the opening of Santee Lakes Recreation Preserve in 1961. The recycled water project and Santee Lakes received worldwide attention and continues to attract interest in the field of water reuse. In 1997, the Ray Stoyer Water Recycling Facility was expanded to 2 million gallons per day to provide water for Santee Lakes and for non-potable reuse in portions of the community.


A Program with Many Benefits


  • Creates a new, local, reliable and drought proof-drinking water supply.


  • Reduces East County’s reliance on the City of San Diego’s Metropolitan Wastewater System.


  • Will produce up to 30 percent of East County’s drinking water supply.


  • It’s a smart investment – the cost will be competitive with imported water.


  • Repurposes water treatment byproducts for beneficial use, including electricity generation and dust control.


  • Sustains East County’s economy and quality of life.