SAWS News: Pipeline Will Deliver Water Management Flexibility
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Edwards Aquifer

Aquifer Level 664.9'
12/11/17 - 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 664.9 | Year-Round Watering Hours

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Pipeline Will Deliver Water Management Flexibility

For the last 10 years, Twin Oaks Aquifer Storage and Recovery facility has functioned like a one-way street — utilizing a single pipeline to either inject or recover water from the massive underground storage site in far southern Bexar County.

imageBut the construction of a new 28-mile pipeline will change that, making the ASR a two-way site that allows water to be produced at the same time it is being stored or recovered.

"The major benefit is the flexibility it will provide SAWS in utilizing our new and existing water resources — including desalinated groundwater, Carrizo Aquifer water and stored Edwards water — further minimizing the impact to the Edwards Aquifer," said Sean Reich, project engineer.

The pipeline, along with two new pump stations, comprises Phase 1 of a two-phase project under the Water Resource Integration Program.

The route of the pipeline across the south and west portions of the city will offer further flexibility in directing the utility’s diverse water supplies to where they are needed most.

The project includes tunneling up to 100 feet deep to route the pipe underneath the Medina River and Medio Creek.

The SAWS Board approved contracts at its Dec. 2 Board meeting to begin construction of the pipeline that will convey water from the new pump station at Twin Oaks West to the new pump station at the Old Pearsall Road facility. Phase 1 construction is expected to be complete by spring 2016.

Phase 2 construction, tentatively scheduled to begin in late 2019, will include upgrades to two pump stations, as well as 17 additional miles of pipeline connecting to the Anderson pump station at Loop 1604 and Texas 151 in northwest San Antonio.

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