Aquifer Beaker

Edwards Aquifer

Aquifer Level 658.9'
8/17/17 - 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 658.9 | Stage 1: Water once a week


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History & Chronology



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Governor Connally directs the Texas Water Commission to develop a comprehensive state water plan.


Texas Supreme Court, in case #A-10989 (City of San Antonio et al vs. The Texas Water Commission et al), finds that San Antonio is authorized to purchase Canyon Lake water.


State passes Texas Water Quality Act of 1967 and establishes the Texas Water Quality Board. TWQB is charged with maintaining State Water Quality.


State publishes first State Water Plan - begins to make water a prominent issue.


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