SAWS: Turf Study
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.

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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 656.9 | Stage 1: Water once a week

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Turf Study

Turf Study

SAWS has recently completed a two-year recycled water study entitled, "Edwards Aquifer Recharge Zone Irrigation Pilot Study" (EARZIPS). The EARZIPS' primary objective is to provide scientific information concerning the fate of nutrients and other constituents of Type I recycled water when used for irrigation of turf areas on the recharge zone and the potential for contamination of the underlying aquifer.

The results of this study include recommendations on the use of recycled water and fertilizers on turf over the Edwards Aquifer Recharge Zone based on the data collected and the results of the analyses performed.

Two literature reviews were also conducted to act as supporting documentation for the study, which include "Potential Groundwater Contamination from Irrigation of Turf with Recycled Water" and "Risk Evaluation of Microbiological and Toxicological Components of the San Antonio Water System's Recycled Water."

For more information on this study, call Ken Diehl at 210-233-3535.