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Edwards Aquifer Map Viewer

This interactive map viewer allows users to view the areas of Texas that are subject to regulation by the TCEQ under the Edwards Aquifer Protection Program. You can print a copy of the map to submit with your application.

  • User Guide Adobe PDF - This downloadable PDF document explains how to use the tools available in the viewer.
  • Metadata - The Edwards Aquifer maps come from official printed maps, containing regulatory boundaries based on previous geologic interpretations of the Edwards Aquifer zones—that is, the recharge, transition, and contributing within the transition zones, as defined in 30 TAC 213. For more details about this data and the map viewer, please visit the Edwards Aquifer Viewer DescriptionExit the TCEQ page in ArcGIS Online
  • Access and Use Constraints –This product is for informational purposes and may not have been prepared for or be suitable for legal, engineering, or surveying purposes. It does not represent an on-the-ground survey and represents only the approximate relative location of property boundaries.
    Presently, all GIS related applications have a statewide exemption from 1 TAC 213 granted by the Department of Info Resources Exit the TCEQ. If you require special assistance, please consult the Esri Software - Voluntary Product Accessibility Templates (VPATs) Exit the TCEQ for ArcGIS Online applications.
  • Contact Us – E-mail the Edwards Aquifer Program staff at or talk with staff in the TCEQ Austin Regional Office at 512/339-2929 or the San Antonio Regional Office at 210/490-3096.