Energy and Environment Reporting for Texas


What is the Edwards Aquifer Authority?


The Edwards Aquifer Authority (EAA) is a groundwater district mandated by the Edwards Aquifer Authority Act adopted by Texas lawmakers in 1993 and put into effect in 1996. The Authority manages and regulates the portion of the Balcones Fault Zone Edwards Aquifer around San Antonio – a jurisdictional area of more than 8,000 square miles across eight counties. These include all of Uvalde, Medina, and Bexar counties as well as parts of Atascosa, Caldwell, Guadalupe, Comal, and Hays counties. The Edwards Aquifer Authority produces drinking water for more than two million people.

The Authority heads up the Aquifer Science Research program (ASRP) which conducts a series of studies evaluating current water quality and availability in the Edwards Aquifer. Additionally, the Authority has overseen implementation of the Edwards Aquifer Habitat Conservation Plan (HCP). Developed in 2007, the HCP outlines several conservation measures that could be taken to protect threatened and endangered species found in the Edwards Aquifer-fed Comal and San Marcos springs.

Latest Posts

In Texas, Using Fire to Protect and Expand Water Supplies

Fire and water may seem at odds with each other, but Austinā€™s city-owned water utility is using prescribed burningĀ in an effort to help more rainfall make its way underground to the Edwards Aquifer. Austin Waterā€™s Wildland Conservation DivisionĀ is conducting the burnsĀ on over 380 acres of Hay County that feed into the Barton Springs Segment of […]

Please Welcome Roland Ruiz as Edwards Aquifer Authority General Manager

He’s not exactly new to the job, as he’s been serving as interim general manager for a while, but Thursday the Edwards Aquifer Authority (EAA) officially selected Roland Ruiz as their new general manager. Ruiz, who used to run communications at the Authority, stepped in as general manager in June, after Karl Dreher was abruptly […]

General Manager Out at Edwards Aquifer Authority

After being placed on administrative leave last week, the general manager of the Edwards Aquifer Authority (EAA), Karl Dreher,Ā has now been let go, effective immediately. The Authority manages the groundwater district of the Edwards Aquifer, which includes San Antonio and many of the surrounding counties,Ā producing drinking water for more than 2 million people in Central […]

Edwards Aquifer Authority Manager Placed on Leave

Karl Dreher, the general manager for the Edwards Aquifer Authority (EAA), has been placed on paid administrative leave. An EAA spokesperson confirmed the news today to StateImpact Texas, which was first reported in the San Antonio Express-News. The Authority manages the groundwater district of the Edwards Aquifer, which includes San Antonio and many of the […]

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