2.5

million

Texans served across eight Texas counties

90,000

gallons of rainwater collected at EAA headquarters in 2024

1,940

permit holders help us manage this vital resource

10,000

students have enjoyed free field trips to the EAA EOC

2,000

native plants given free to residents in Oct 2024

Our Purpose Runs Deep

The Edwards Aquifer is more than a water source — it’s a living story that connects our past, present and future. It’s the reason settlers came to this area, and it’s the lifeblood of our growth. Our aquifer is a resource we can study and learn from. It’s an incredible wonder, and it’s why we’re here.

Tap into the latest
research here at the EAA

The Edwards Aquifer Authority’s Environmental Data Portal is your gateway to today’s research, insights, and discoveries driving sustainability and innovation for the region.

Fall Internship Opportunities! 👉 Don't miss out! Apply today by 4:30 CST. Learn more and apply here: 🔗 https://lnkd.in/g79hp-V

Looking to kickstart your career? We’re offering 7 incredible internships across various departments! Don’t miss your chance to gain hands-on ...experience, expand your skills, and grow professionally - all while earning $19.28/hour for 20 hours/week.

Fall & Spring Internships:
🔹 Aquifer Management Services – 1 internship
🔹 Administration & Financial Services – 1 internship

Fall Internships:
🔹 Information Technology – 1 internship
🔹 Communication & Development – 3 internships at our Education Outreach Center

Whether you're passionate about environmental management, finance, IT, or communication, we have a spot for you!

EAA Declared an Increase to Stage 4 Permit Reductions for the San Antonio Pool

San Antonio, TX – Yesterday, the Edwards Aquifer Authority (EAA) declared Stage 4 Critical Period Management for Edwards groundwater permit holders in the San Antonio Pool of the EAA’s jurisdiction (Medina, ...Bexar, and parts of Atascosa, Caldwell, Guadalupe, Comal, and Hays counties) based on a decline in aquifer conditions effective Tuesday, August 12, 2025. Yesterday, the ten-day average at the J-17 index well is 629.9 feet above mean sea level (ft. amsl), which is within the Stage 4 threshold for the EAA Critical Period Management Plan (CPM). Additionally, the ten-day average at Comal Springs is 105 cubic feet per second (cfs), and the San Marcos Springs ten-day average is 102 cfs.

CPM Stage 4 for the San Antonio Pool reduces the annual authorized withdrawal amounts available to affected Edwards groundwater permit holders by 40 percent of their withdrawal amounts based on the number of days CPM is in effect for the indicated stage reduction. These reductions apply to all Edwards Aquifer groundwater permit holders authorized to pump more than three acre-feet annually. This includes industrial and agricultural users, as well as water utilities authorized to pump water from the Edwards Aquifer for delivery to their respective customers. All affected permit holders must also report their pumping totals to the EAA on a monthly basis.

Residents and businesses within those counties who receive their water from a public water system should follow their respective water providers’ directives regarding water use practices. It should be noted that the EAA does not enforce lawn watering activities or other general water limitations beyond the curtailment of withdrawals from the Edwards Aquifer. Any enforcement of such activities or limitations is enforced by a municipality. The EAA does not regulate the general public but instead regulates Edwards well owners with withdrawal permits authorizing their right to pump from the aquifer.

The EAA is a groundwater conservation district that manages, enhances and protects the Edwards Aquifer, a major groundwater system serving approximately two-and-one-half million South Central Texans. The EAA jurisdiction spans across 8 counties including Uvalde, Medina, Bexar, and parts of Atascosa, Caldwell, Guadalupe, Comal and Hays counties.

To learn more about our Critical Period Management Plan, please visit: https://www.edwardsaquifer.org/groundwater-users/critical-period-drought-management/

🎉 Celebrating 29 Years of Protecting the Edwards Aquifer! 💧

For nearly three decades, the Edwards Aquifer Authority has been dedicated to safeguarding one of our region’s most vital natural resources. But what truly makes this mission possible? Our people.

In honor of our ...29th anniversary, we asked team members to share what they love most or have found most meaningful during their time at EAA - and their answers say it all. From scientific discovery to community impact, their passion is at the heart of everything we do.

🎥 Hit play to hear the voices behind the mission.

Here’s to 29 years of stewardship, innovation, and service - and to the future we’re building together to protect and conserve one of our most precious groundwater resources.

Manage💧Enhance💧Protect

💧Tune in to our August board meeting this afternoon at 1 p.m. (CT) to hear the latest updates from our agency. Watch live, here, on our official FB page or via Zoom at https://edwardsaquifer-org.zoom.us/j/96604345580

No, seriously, even the tiniest hands love our exhibits...

Looking for a FREE way to spark curiosity and inspire learning? 🌟 The EAA Education Outreach Center (EOC) is full of hands-on activities and interactive exhibits that make science, nature, and water conservation come to life! ...💧🌿🦉

Don’t forget to enter your best water-saving photo in our Rooted in Saving Water Photo Contest! From planting Texas native plants to using smart irrigation, composting, or setting up a rainwater harvesting system, there's many great ways to conserve water right in your own home!

Enter by Sept. 2 for a chance to win:
💵 A $100 VISA gift card
💧 A water-saving swag bag
📅 A feature in the 2026 EAA Calendar
🏆 Recognition at the October EAA Board Meeting
🎉 Grand prize: A $500 VISA gift card!
Submit your photo today — link in the comments!

Your Aquifer Education Destination💧
#EAAEOC #EdwardsAquifer #WaterSaver #PhotoContest #RootedInSavingWater #FreeFamilyFun #WaterConservation #freethingstodoinSA #SanAntonioTX

A new week calls for a new look to our building!⬇️Great things are on the horizon this year, as we celebrate our 29th year of managing, enhancing, and protecting the Edwards Aquifer!💧

💧 How Groundwater Permits & Conversions Support a Sustainable Edwards Aquifer 💧

We use several tools to manage how permit holders withdraw water from the Edwards Aquifer to ensure it stays a sustainable resource. One such tool is the Base Irrigation Groundwater (BIG) conversion ...to Unrestricted Water.

During the issuance of initial permits, an irrigation permit holder was typically assigned two acre-feet of water per acre of irrigated land, based on their historical water use.

One acre-foot is considered “unrestricted” water, and the other is considered “base” water. Unrestricted water can be leased, sold, and bought by permit holders and used for irrigation, industrial, or municipal purposes within the EAA’s region. Base water, however, is tied to the physical land which it historically irrigated. If a farm is sold, the base water stays with the land and cannot be sold to another farm or used for any purpose other than farm irrigation.

Suppose the land on which the farm is located is developed into a subdivision or is no longer suitable for farming. In many cases, the development of land is contingent on the developer having an agreement with the public water utility to convert the base irrigation water to unrestricted and then transfer the unrestricted water to the public water utility. When this occurs, the water transferred to the public water utility will add to their existing water supply, including the new development.

Therefore, no new water will be pumped from the Edwards Aquifer.

#EdwardsAquifer #GroundwaterPermits #TexasAquifer