Aquifer Beaker

Edwards Aquifer

Aquifer Level 669.6'
4/26/16 - 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 669.6 | Year-Round Watering Hours

eBill Site Maintenance

4 - 6:00 a.m.

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Seize the Rain!
By Cynthia Barsun
A house with a 1,000-square-foot roof can yield about 600 gallons of rainwater from just
1 inch of rainfall.

There are lots of reasons to harvest rain water. But this one in particular comes to mind. A house with a 1,000-square-foot roof can yield about 600 gallons of rainwater from just 1 inch of rainfall. That's a lot of water! (Click here to estimate how much your roof might collect.)

Now consider all the rooftops in your neighborhood and imagine how much water is running down the street into our rivers and streams. Storm water runoff can become a problem in some areas, causing flooding, eroding banks of rivers and streams, and carrying pollutants into them. Harvesting rainwater can help prevent some of this.

Here are a couple of ideas to put rainwater you collect to good use:

  • Rain Gardens – Make the most of storm water runoff by using native vegetation, which is more tolerant of the local climate and soil conditions (adding compost to soil greatly increases its water holding capacity). Plus, native plants provide year-long color and may even attract wildlife.
  • Water features – From waterfalls to garden fountains to small ponds, water elements present the perfect opportunity to use rainwater you collect. But do some research first to determine how much water can be captured, size of any pumps that are needed, and how much water storage capacity is required for particular features.
  • Everyday irrigation – Your plants prefer rainwater. Not only is it free, but rainwater doesn't contain salts and other minerals that can hinder root growth.

All you need for harvesting is a good rainstorm and something to collect it in. It's that easy.

image Join the Conversation

Are you collecting rainwater? How do you use it? Tell us about it on Facebook!

Cynthia Barsun is a conservation consultant for San Antonio Water System.

Good Gardening Tip
Turf Trouble?
Turf diseases such as brown patch and take-all patch frequently begin in the cooler months but don't become evident until summer. The most common cause: excessive watering during nighttime and early morning. Prevent turf disease by watering no earlier than 7 a.m. and preferably not before April 1 (grasses go dormant in winter anyway).