Groundwater Desalination

Sweetwater Authority customers are among the first in the region to benefit from a desalination process designed to treat "brackish," or saline, groundwater to make it safe for human use.

About the Facility

The Richard A. Reynolds Groundwater Desalination Facility, formerly known as a Demineralization Facility, uses reverse-osmosis treatment (R/O) to remove dissolved salts and microscopic particles, such as bacteria and other contaminants which could be found in alluvial groundwater. The R/O process water is treated to prevent corrosion, and chlorine and ammonia are added to further assure disinfection.
Reverse Osmosis Vessels at the Richard A. Reynolds Groundwater Desalination Facility
The facility, completed in 1999, can produce 4 million gallons of drinking water per day. It was honored with a 1999 San Diego Orchid in the competition's environmental solutions category.