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Edwards Aquifer Research & Data Center (EARDC)

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  Monday – Friday    8 - 5 pm  (closed for lunch 12-1 pm)

Bacteriological samples are not excepted on Fridays only by special request.  

For more information you can call: 512-245-2329


It is with great sadness that we inform you of the passing of our colleague and dear friend, Joe Guerrero.  Joe passed away Sunday, August 22, 2021.  He had been a valued member of our team and will be greatly missed. Please keep Joe’s family in your thoughts as they go through this difficult time.

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The Edwards Aquifer Research & Data Center (EARDC) Laboratory is accredited by the National Environmental Laboratory Accreditation Program (NELAP).  The accredited laboratory and research center is found within the College of Science & Engineering. EARDC takes an active role in water education, works with public schools as well as institutions of higher education.  The EARDC Laboratory has been providing water analysis services for a variety of chemical and biological constituents found in wells, springs, rivers, municipalities, and wastewater treatment facilities. EARDC was established in 1979 with special funding for Texas State University to provide a public service in the study, understanding and use of the very fragile natural resource, the Edwards Aquifer.