| Cities |
Counties |
| City of Alpine |
Brewster County |
| Town of Anthony |
Culberson County |
| Town of Clint |
Doña Ana County |
| City of Dell City |
El Paso County |
| City of El Paso |
Hudspeth County |
| Town of Horizon City |
Jeff Davis County |
| City of Las Cruces |
Presidio County |
| Town of Marfa |
|
| City of Presidio |
|
| City of Socorro |
|
| Town of Valentine |
|
| Town of Van Horn |
|
| Village of Vinton |
|
| Special Districts |
Tribes |
| El Paso Community College |
Ysleta del Sur Pueblo |
| El Paso County Tornillo Water Improvement District |
|
| El Paso Water Improvement District No.#1 |
|
| El Paso Water Utilities Public Service Board |
|
| Horizon Regional MUD |
|
| Lower Valley Water District |
|
| School Districts |
Associate Members |
| El Paso Independent School District |
Sul Ross University |
| Presidio Independent School District |
|
| Tornillo Independent School District |
|
| Socorro Independent School District |
|
| Ysleta Independent School District |
|
