Cities
- Argyle
- Austin
- Bastrop
- Boerne
- Brenham
- Brownfield
- Burnet
- Fate
- Fair Oaks Ranch
- Fredericksburg
- Georgetown
- Granite Shoals
- Grapevine
- Highland Village
- Irving
- Kerrville
- Lampasas
- Liberty Hill
- Livingston
- Marshall
- Rowlett
- Seguin
- Taylor
- Temple
- Universal City
Other Organizations
- Alamo Area Council of Governments
- Anderson Mill Municipal Utility District
- Anderson Mill Limited District
- Brushy Municipal Utility District
- Edwards Aquifer Authority
- Guadalupe County
- Johnson County Special Utility District
- Lost Creek Municipal Utility District
- Lower Colorado River Authority
- North Texas Municipal Water District
- San Antonio River Authority
- San Patricio Municipal Water District
- Wells Branch Municipal Utility District
- Houston-Galveston Area Council
- Lower Rio Grande Valley Development Council
- Malcolm-Pirnie Engineering
- Preservation Texas, Inc.
- Science Teachers’ Association of Texas
- Texas Association of Counties
- Texas Association of Regional Councils
- Texas Legal Protection Plan, Inc.
- Texas Mutual Insurance Company
- Texas Parks and Wildlife Department
- Texas Recreation and Parks Society
- Texas State Technical College System
- The University of Texas at Austin