We are a 501(c)(3) nonprofit organization that promotes effective broad-based advocacy for protection and preservation of the Edwards Aquifer, its springs, watersheds, and the Texas Hill Country that sustains it.
The Edwards Aquifer Ecosystem of Central Texas is one of our most valuable, irreplaceable and endangered public treasures. The EPA recognizes it as a “Sole Source” water supply. It is the only source of drinking water for millions of Texans.
It is our right and duty to preserve and protect the Aquifer, its contributing Hill Country watersheds, its great springs, and its native biodiversity for the benefit of all residents and all future generations. As individuals and community-based organizations, we invite everyone who shares the desire to preserve the Edwards Aquifer to join with us.
The Greater Edwards Aquifer Alliance has originated a comprehensive program of science, advocacy, and public engagement aimed at protecting the quality and quantity of spring flows from the Edwards and Trinity aquifers. We are in need of support to fund key projects that are currently underway.
GEAA will be actively participating in the 89th Legislative Session.
Our legislative agenda will
include the following priorities:
• Water Reuse
• Extraterritorial Jurisdictions
• County Authority
• Land Use and Housing Regulations
• Water Availability
• Texas Water Development Board Funding and Programs
The Greater Edwards Aquifer Alliance (GEAA) is excited to launch “Under Our Feet“, a new interactive website designed to promote better understanding and protection of the Edwards and Trinity aquifers and, especially, the Edwards Aquifer Recharge Zone that supplies water for over 1.5 million Texans.
Realizing that very few people understand what a marvelous resource we have in our uniquely prolific karst aquifer, GEAA designed this site to encourage everyone to love this mysterious underground landscape as much as we do. “Under Our Feet” provides users with an overview of the Edwards and Trinity aquifers, karst groundwater systems, the Edwards watershed landscape, risks facing the aquifer systems, how to protect karst aquifers, and how to stay involved. Users will discover which zone of the Edwards Aquifer they live in, what that means in the groundwater cycle, what risks the aquifer is facing, and what actions they can take to protect the Edwards Aquifer. The site uses interactive maps, links, infographics, and photos to provide an engaging experience for all users.
Adults will be encouraged to “Take the Pledge” to adopt habits and practices that will protect the Edwards spring-fed streams and keep our water supply healthy. Children can “Adopt a Blind Salamander“, one of the endangered species that lives under our feet and nowhere else.
GEAA’s Executive Director Annalisa Peace will be speaking at the Esperanza Peace & Justice Center’s Second Annual Water Festival. The event is on Saturday, March 29th. She will be joined by other speakers including educators and activists. They will engage in community dialogue on local water issues. Come out and take part in the conversation! More about the festival here:
Deceleration News Greg Harman Feb. 14, 2025 YOUTUBE VIDEO HERE! Hundreds of residents gathered in Grey Forest, Texas earlier this month to decry plans for 2,900 homes on the outskirts of San Antonio—expected to discharge a million gallons of treated wastewater daily into the Helotes Creek watershed. Those who have studied the project said contamination could reach local water wells in less than a day after discharge. And, they warned, with San Antonio Mayor Ron Nirenberg amplifying the point, that
Mayor Nirenberg visited the Helotes area that could be affected by developer’s proposed wastewater plant. https://www.ksat.com/news/local/2025/02/17/northwest-bexar-county-residents-oppose-wastewater-permit-over-drinking-water-concerns KSAT 12 Zaria Oates, Reporter Ricardo Moreno, PhotojournalistFebruary 16, 2025
https://news4sanantonio.com/news/local/officials-work-to-prevent-treated-waste-water-from-entering-helotes-creek
GEAA’s Executive Director Annalisa Peace will be speaking at the Esperanza Peace & Justice Center’s Second Annual Water Festival. The event is on Saturday, March 29th. She will be joined by other speakers including educators and activists. They will engage in community dialogue on local water issues. Come out and take part in the conversation! More about the festival here:
Deceleration News Greg Harman Feb. 14, 2025 YOUTUBE VIDEO HERE! Hundreds of residents gathered in Grey Forest, Texas earlier this month to decry plans for 2,900 homes on the outskirts of San Antonio—expected to discharge a million gallons of treated wastewater daily into the Helotes Creek watershed. Those who have studied the project said contamination could reach local water wells in less than a day after discharge. And, they warned, with San Antonio Mayor Ron Nirenberg amplifying the point, that
Mayor Nirenberg visited the Helotes area that could be affected by developer’s proposed wastewater plant. https://www.ksat.com/news/local/2025/02/17/northwest-bexar-county-residents-oppose-wastewater-permit-over-drinking-water-concerns KSAT 12 Zaria Oates, Reporter Ricardo Moreno, PhotojournalistFebruary 16, 2025
https://news4sanantonio.com/news/local/officials-work-to-prevent-treated-waste-water-from-entering-helotes-creek
New Report released by GEAA’s Policy Director, Rachel Hanes. May 2024. The Greater Edwards Aquifer
Educational DVD produced by GEAA in association with KLRN and funded by Boeing.
This manual offers an integrated approach to storm water management for the Edwards Aquifer to
A detailed map pf the Edwards Aquifer plus a Guide to Appreciation and Conservation of
Water: Yours, Mine, and Ours was produced through an EPA Nonpoint Source Pollution project of
An Overview and Assessment of Current Regulatory Agency Processes. Click to view report
This white paper discusses the use of green spaces for soil water storage and carbon
Learn how to protect and increase soil organic matter with the information created by GEAA’s
Below is our position paper and recommendations for improving stormwater management in San Antonio. You
Here are images that GEAA would like to use for our new nonprofit educational project:
Building on efforts from a previous group of Texas State students from Dr. Yihong Yuan’s
Date: May 16, 2022 A team of four students from Dr. Yihong Yuan’s Geographic Information
Spills Around the Edwards Aquifer Region. Click to see interactive map
Final Report-TCEQ Region 11 – Aquifer Resource Innovators
This report examines existing evidence that wastewater effluent discharged in the Barton Springs and San
Previously, a Texas State GIS Design and Implementation project had been conducted on the visualization
An analysis of Wasterwater Spills In the Edwards Aquifer Recharge Zone, with focus on sewage
In order to aid in the protection of the aquifer, this project has two main
New Report released by GEAA’s Policy Director Rachel Hanes. September 2023 The Greater Edwards Aquifer
