SAWS News: Say So Long to Coal Tar Sealants
Aquifer Beaker

Edwards Aquifer

Aquifer Level 658.5'
9/25/17 - 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 658.5 | Stage 1: Water once a week


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Say So Long to Coal Tar Sealants


Planning to put in or resurface a parking lot or driveway? Don’t use a coal tar sealant to coat the surface.

All use of coal tar preservation sealant products on asphalt or concrete surfaces like driveways and parking lots is prohibited within the city limits effective Jan. 1 of this year, per city ordinance.

San Antonio City Council adopted the ban to reduce and prevent harmful emissions and stormwater runoff.

The ban only applies to new use and application of coal tar products.

More information is available at

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