Project Supporters
- Brownsville Economic Development Council
- Cameron County Commissioners Court
- Cameron County Irrigation District No. 2
- City of Alamo
- City of Alton
- City of Brownsville
- City of Donna
- City of Eagle Pass Water Works System
- City of Edinburg
- City of Harlingen
- City of Hidalgo
- City of La Grulla
- City of La Joya
- City of Laredo
- City of Los Fresnos
- City of Los Indios
- City of Lyford
- City of McAllen
- City of Palm Valley
- City of Penitas
- City of Pharr
- City of Primera
- City of Progreso
- City of Rio Hondo
- City of Roma
- City of San Juan
- City of Sullivan City
- City of Weslaco
- El Jardin Water Supply Corporation
- Harlingen CISD
- Hidalgo County, Office of the County Judge
- Hidalgo MUD #1
- Lower Rio Grande Valley Development Council
- Maverick County, Office of the County Judge
- McAllen Economic Development Council
- McAllen ISD
- McAllen Public Utilities
- Military Highway Water Supply Corporation
- North Alamo Water Supply Corporation
- Olmito Water Supply Corporation
- Pharr-San Juan-Alamo ISD
- Port Mansfield
- Rio Grande Regional Water Authority
- Rio Grande Regional Water Planning Group
- San Benito CISD
- Town of Combes
- Town of Indian Lake
- Town of Laguna Vista
- Town of South Padre Island
- Willacy County Commissioners Court
