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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 - This downloadable PDF document explains how to use the tools available in the viewer.
  • Metadata - The Edwards Aquifer maps were developed from official printed maps that contain regulatory boundaries based on 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 Description 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 30 TAC 213 granted by the Department of Info Resources . If you require special assistance, please consult the Esri Software - Voluntary Product Accessibility Templates (VPATs) 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.