SAWS News: SAWS Desal Plant Prepares to Turn On Tap
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Edwards Aquifer

Aquifer Level 679.8'
7/15/19 - 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 679.8 | Year-Round Watering Hours

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SAWS Desal Plant Prepares to Turn On Tap



It won't be long now before Phase 1 of San Antonio's new desalination plant is up and running, pumping salty water from nearly 1,500 feet deep underground in the Wilcox Aquifer and filtering it to produce 12 million gallons of fresh water a day.

Located in far south Bexar County, the plant is more than 95 percent complete and this month is in testing phases, or what engineers refer to as "startup."

To perform the startup, the plant has been divided into several subsystems that are being checked — and rechecked — to confirm that all wells, pipes, valves and pumps are all functioning as they should.

Desalination uses a filtering process called reverse osmosis that removes salts and other minerals from the water. Once treated, the water will taste the same as Edwards Aquifer water and will blend with the rest of the tap water in our system.

Total cost of the desalination plant when all three phases are complete is $411 million. While brackish groundwater requires more treatment than other SAWS supplies, it is plentiful and unaffected by drought conditions.

The SAWS desal plant will begin delivering water to customers this fall.

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