SAWS: Expanded Carrizo Project
Aquifer Beaker

Edwards Aquifer

Aquifer Level 657.8'
9/19/17 - 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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Landscape Watering
Last Digit of Address Watering Day
0 or 1 Monday
2 or 3 Tuesday
4 or 5 Wednesday
6 or 7 Thursday
8 or 9 Friday
No Watering on Weekends

Stage 1:
Water once a week

Watering with an irrigation system or sprinkler is allowed only once a week before 11 a.m. or after 7 p.m. on your designated watering day as determined by your address.

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Aquifer Level 657.8 | Stage 1: Water once a week

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Expanded Local Carrizo

Lake Dunlap/Wells Ranch

Water from Lake Dunlap, which serves northeast San Antonio, is made possible through an agreement with the Canyon Regional Water Authority. Through this partnership of water supply districts, utilities, water supply corporations and municipalities, the authority purchases untreated surface water from Canyon Lake through the Guadalupe-Blanco River Authority.

The water is withdrawn from Lake Dunlap and then treated to potable quality before it is distributed to the member communities.

SAWS has an agreement to receive up to 4,000 acre-feet per year of treated surface water from Lake Dunlap. Of this volume, 500 acre-feet per year has been leased to the city of Cibolo through 2018.

Wells Ranch

The Canyon Regional Water Authority also has been working to develop the Wells Ranch project, which consists of Carrrizo Aquifer wells in Gonzales County and Carrizo and Wilcox aquifer wells in Guadalupe County. SAWS has an agreement for 2,800 acre-feet per year of Carrizo Aquifer water supplies, for a total of 6,800 acre-feet per year from Canyon Regional Water Authority with the option for delivery of up to 8,250 acre-feet per year from all sources by 2015.

SAWS maintains the infrastructure for delivery of both Lake Dunlap surface water and Wells Ranch Carrizo Aquifer groundwater to the SAWS northeast service area.

* An acre-foot of water is equivalent to 325,851 gallons.