Parks & Recreation Department 

Edwards Aquifer Protection Program (EAPP)


  • Physical Address
  • Municipal Plaza Building
    114 W. Commerce, 11th Floor
    San Antonio, TX 78205   
  • Mailing Address
  • P.O. Box 839966
    San Antonio, TX 78283-3966
  • Phone
  • 210.207.2815 or 210.207.2162.


  • Grant EllisGrant Ellis Email
    Special Projects Manager
  • Susan CourageSusan Courage Email
    Senior Management Analyst

Entering the Edwards Aquifer Recharge Zone

Edwards Aquifer

The Edwards Aquifer provides San Antonio with an abundant source of groundwater vital to the livelihood of a growing population and an expanding economy. It stretches across thousands of acres over several counties in South Central Texas. Roughly 70 percent of the recharge zone is located west of Bexar County. See some photos of land protected by the Edwards Aquifer Protection Program.

Program Background

A short history of the COSA aquifer protection program. More

Protected Properties

A complete list of lands protected by COSA's aquifer protection program. More


What is a Conservation Easement? More

Edwards Aquifer Protection Program

Connect with the

Edwards Aquifer Protection Program

Email Edwards Aquifer Protection Program
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