SAWS: History & Chronology
Aquifer Beaker

Edwards Aquifer

Aquifer Level 684.4'
5/16/19 - 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 684.4 | Year-Round Watering Hours

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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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