Aquifer Beaker

Edwards Aquifer

Aquifer Level 629.5'
10/29/14 - 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 2:
Water On Your Day

Watering with an irrigation system or sprinkler is allowed only once a week from 7-11 a.m. and 7-11 p.m. on your designated watering day as determined by your address.

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Aquifer Level 629.5 | Stage 2: Water On Your Day

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Your Water

Your Water

Since 1936, the Texas Commission on Environmental Quality has rated San Antonio as having a superior water system. We are committed to providing you with reliable, quality water as well as providing responsible leadership in managing San Antonio's water resources.

Edwards Aquifer

Edwards Aquifer

Most of San Antonio's drinking water is pumped from this massive underground reservoir. Learn more about this amazing natural resource, including aquifer levels and statistics.

Water Quality

Water Quality

It's normal for all drinking water to contain trace amounts of minerals and other substances. Find out exactly what is in your superior-quality water supply.

New Water Sources

New Water Sources

SAWS is investing in new, non-Edwards Aquifer water sources, as well as a pioneering desalination operation in southern Bexar County, to ensure our city's water future.

Water Recycling

Water Recycling

San Antonio is the only U.S. city to reuse all three wastewater treatment process byproducts: recycled water, organic biosolids and methane gas. We humbly call it the environmental "trifecta."

Water Resource Protection & Compliance

Water Resource Protection & Compliance

As a result of increased development and the potential for polluting the Edwards Aquifer, SAWS takes a proactive approach to protecting your water supply quality.

Fluoride

Fluoride

SAWS first added fluoride to the system's water supply in August 2002. Here are answers to some frequently asked questions about fluoridation.