Aquifer Beaker

Edwards Aquifer

Aquifer Level 684.1'
3/24/17 - 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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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 684.1 | Year-Round Watering Hours


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Conservation Outreach Calendar

Explore our online calendar and find out more about SAWS Conservation events scheduled in the San Antonio area. Events include workshops, seminars, lectures and other functions promoting conservation.

San Antonio's Growth and Its Impact on the Urban Environment

March 28, 2017 (Tue) 6:30 PM - 8:00 PM
Lions Field Adult Center - 2809 Broadway
Gail Gallegos, executive director of Green Spaces Alliance (GSA), will address the explosive growth in San Antonio and how the need for preserving urban green space is now more important than ever. She will address key areas of interest, strategies, and possible solutions for retaining our valuable undeveloped spaces. Her colleagues at GSA, Chris Babis and Tyler Sanderson, will describe the organization’s Urban Land &Water Program and its Land Conservation Program. The “perceived wildness” within San Antonio’s city limits is one of our city’s most endearing qualities. A system of drainages and greenways is in place and being expanded to protect the undisturbed bits of our city that remain. But with the fast-paced development being wooed here causing a projected doubling of SA’s regional population in the next 50 years, it is painfully evident that we are losing our wild very quickly in the face of relentless paving-over. Additionally, concern for each community’s right to interpret the protections it needs is heightened as some Texas legislators move to ban local ordinances such as our tree ordinance and other cities’ plastic-bag ordinance claiming that the state knows best what each town needs. What can we do locally to protect the natural environment of San Antonio? The mission of Green Spaces Alliance of South Texas ( is “to sustain the natural environment and enhance urban spaces land conservation, through community engagement and education.”

Lunch and Learn Series: Revealing Fruit

March 30, 2017 (Thu) 11:30 AM - 1:00 PM
San Antonio Botanical Garden - 555 Funston
Plants use crafty strategies for getting their babies dispersed and into favorable environments. Join us as we eat our way through a lecture on the secrets of fruits. Fee: $15 ($13.50 members) Bring your lunch

Keyhole Gardening

March 30, 2017 (Thu) 6:30 PM - 8:30 PM
8750 Tesoro, San Antonio, Texas
PPT presentation illustrating use of elevated gardening beds in small spaces and / or for egonomics. Proper construction, bed preparation and maintenance / watering recommendations discussed. Construction types and methods for elevated gardening using watersaving plant materials. Discussion of SAWS website and rebate

Turf Grass 101: Do's and Don'ts for Your Lawn

April 1, 2017 (Sat) 10:30 AM - 1:00 PM
Milbergers Nursery - 3920 N Loop 1604
David Rodriguez from the Texas A&M AgriLife Extension Service will discuss the basics of lawn maintenance through proper nutrition, mowing, weed control and irrigation. This seminar is very popular so arrive early for best parking and seating. Seminar is free. 1.5 CEU’s for Master Gardeners who attend.

Watersaver Landscape Tour - GVST

April 8, 2017 (Sat) 9:00 AM - 3:00 PM
IH 10 Corridor and Kyle Seale Pkwy
Presented by GVST (Gardening Volunteers of South Texas) in Partnership with SAWS Conservation, this FREE, self-guided tour showcases impressive yards that don’t require lots of water to remain beautiful. Yards have been selected for their uniqueness in design, use of native and drought tolerant plants, reduced lawn area and appropriate maintenance practices. Six impressive yards north of Loop 1604 between the IH10 corridor and Kyle Seale Parkway are featured. Since 2002, this tour has highlighted GVST’s mission to promote outdoor water conservation through education outreach. Visit for more information. A program and map will be available in all yards. Yards will be in the following neighborhoods: Sonoma Ranch Babcock Road & Clear Rock Stonewall Estates Village Green Fair Oaks Ranch The tour, one of our biggest annual events, showcases impressive yards that don’t require lots of water to remain beautiful. Yards have been selected using the following criteria: • Uniqueness in design, plant material and color • Plant materials used are appropriate, native and/or drought tolerant species • Lawn area has been reduced or eliminated and replaced with impervious hardscape, mulch or turf grass that is appropriate for the space This free event, co-sponsored by the San Antonio Water System and the San Antonio River Authority, started in 2002. It supports our mission to promote outdoor water conservation through educational outreach within the Bexar County communities. For more information, contact GVST at: (210)251-8101 or

Converting Your Garden to a Waterwise Garden

April 8, 2017 (Sat) 9:30 AM - 11:00 AM
San Antonio Botanical Garden - 555 Funston
What are the chief techniques to turning a yard dominated by lawn and thirsty plants into one that is beautiful but uses less water? This class will teach both techniques and considerations in the conversion to a waterwise garden, as well recommended plants. Mary Irish is a horticulturist, author and manages the greenhouse at the San Antonio Botanical Garden. She has over 20 years experience. Fee: $20 ($18 members)

South Texas Lawn Care: I Want the Same Kind of Grass THEY Have

April 8, 2017 (Sat) 9:30 AM - 11:00 AM
San Antonio Botanical Garden - 555 Funston
Lawn grasses in our area can be a beauty or a beast. Some require lots of water while others don't. All require at least some TLC in order to be lush and carpet-like. In this class we discuss the major varieties of grass that do well here, fertilizer for them, watering, and pest/disease problems. Fee: $20 ($18 members)

Baking Up a Storm with Herbs

April 13, 2017 (Thu) 7:00 PM - 9:00 PM
San Antonio Garden Center - 3310 N New Braunfels
Eat to Live and Love to Eat! Suzanne Parker is the founder and CEO of Powerhouse Bakery. As a registered dietitian and personal trainer, Suzanne's mission is to show her customers that healthy should taste amazing! Suzanne designs recipes to showcase the healthiest gluten free, non-GMO & organic ingredients. Her kitchen is run by several passionate foodies dedicated to health & wellness education and offer cooking classes, individual and group nutrition coaching. Suzanne will be demonstrating herbs used in the healthiest ways. Please join us for our social time at 6:30 with the general meeting starting at 7:00. The San Antonio Herb Society meets at the San Antonio Garden Center located at the corner of Parland and New Braunfels. For more information visit our website at

Viva Botanica

April 22, 2017 (Sat) 10:00 AM - 2:00 PM
San Antonio Botanical Garden - 555 Funston
Celebrate Fiesta® and Earth Day at the San Antonio Botanical Garden. Enjoy Los Colores of spring in th Garden and learn about nature with fun, hands-on activities. Fee: Free with Admission

Texas Superstar® Plants

April 29, 2017 (Sat) 9:30 AM - 11:00 AM
San Antonio Botanical Garden - 555 Funston
Texas Superstar® plants provide maximum beauty with minimal care. They come highly recommended for WaterSaver landscapes by Texas A&M AgriLife Research and Extension. Learn from Master Gardener, Brigid Oman, about the variety of plants that have been subjected to statewide testing and been found to be hardy, tolerating the heat and drought conditions as well as proving to be disease and insect tolerant. Fee: $20 ($18 members)

Secret Gardens of the Historic Monte Vista Tour

May 13, 2017 (Sat) 9:00 AM - 4:00 PM
Monte Vista
The Saturday before Mother’s Day, visit beautiful backyards tucked away in historic Monte Vista. Designed by landscape architects, these urban green spaces are sure to lend inspiration for your own South Texas yard. During this self-guided walking tour, docents will be available at each home. Visit the block party anytime during your tour for refreshments, where vendors will provide resources and native plants to enhance your yard, as well as our local environment. Visit for info and tickets. All proceeds support Green Spaces Alliance.

Eco Centro Sustainable Landscape Tour

June 10, 2017 (Sat) 8:00 AM - 12:00 PM
Eco Centro - 1802 N. Main
Meet at Eco Centro at 8:00 AM. Interested in reinventing your landscape? Why not do it in a sustainable way that conserves water, mitigates flooding, helps keep our streams clean, is drought tolerant, and has the potential to produce food! Come join us for an exciting guided tour through some of San Antonio’s most progressive landscapes: The Renewable Republic, San Antonio River Authority Rain Garden, Mahncke Park Food Forest. FREE, limited to 22 people, pre-registration required via