SAWS News: Desal Now On Tap in San Antonio
Aquifer Beaker

Edwards Aquifer

Aquifer Level 662.9'
11/20/17 - Official

The Edwards aquifer and its catchment area in the San Antonio region is about 8,000 square miles and includes all or part of 13 counties in south-central Texas.

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Year-Round Watering Hours

Watering with an irrigation system or sprinkler is allowed any day of the week before 11 a.m. or after 7 p.m.

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Aquifer Level 662.9 | Year-Round Watering Hours

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Desal Now On Tap in San Antonio

San Antonio’s new desalination plant is officially up and running, pumping salty water from nearly 1,500 feet underground in the Wilcox Aquifer and treating it to produce 12 million gallons of drinking water each day.

SAWS trustees, staff and elected officials marked the occasion with a grand opening celebration Jan. 27.

“Desalination is another tool in our water portfolio that we are using to serve a growing San Antonio,” said SAWS President and CEO Robert R. Puente. “There is an ocean of brackish water under our feet unaffected by drought.”

More than 10 years in the making, the H2Oaks Center is located in far south Bexar County at the site formerly known as SAWS Twin Oaks Aquifer Storage and Recovery. The location is now home to three water supplies, all operated from the H2Oaks Center control room: desalinated water, underground storage and local Carrizo Aquifer.

Desalination uses a filtering process called reverse osmosis that removes 99.9 percent of the salts and minerals from the water. Once treated, the water tastes the same as Edwards Aquifer water and blends with the rest of the water in our system. The plant can produce up to 12 million gallons per day (13,441 acre-feet per year) of finished water — enough to supply up to 53,000 households.

“This is another step in the right direction toward adding new supplies for San Antonio's future,” said SAWS Board Chairman Berto Guerra Jr. “We have the benefit of the 12 million gallons per day, and can access additional phases of desalination as we need them.”

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