SAWS SWI Field Investigations
Aquifer Beaker

Edwards Aquifer

Aquifer Level 656.9'
9/22/17 - 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.

Learn More »

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.

Learn More »


Aquifer Level 656.9 | Stage 1: Water once a week


Pay Your Bill Online

Already Registered? Login Now.

Forgot Your Password?

New User

Register for SAWS eBill

Don't Have An Account? Get Started Now.

Sign Up Now


SWI Field Investigations

Let's get out and learn!

Down the Drain: Investigating Water After the Flush

What happens to San Antonio's water after it is flushed? Learn about our wastewater system as you take a bus tour of SAWS' largest treatment facility.

Time: 2 hours

Grades: 6-8

Requirements: Transportation to the field trip site must be provided by the school; group sizes are limited to one bus. Tours are conducted on Thursdays and subject to availability.