| Bandera County River Authority and Groundwater District | Texas | 2018-08-22 | 2025-12-31 |
| Blanco-Pedernales Groundwater Conservation District | Texas | 2018-08-22 | 2023-12-31 |
| Brazoria County Groundwater Conservation District | Texas | 2018-08-22 | 2025-12-31 |
| Calhoun County Groundwater Conservation District | Texas | 2021-02-02 | 2021-12-31 |
| Central Texas Groundater Conservation District | Texas | 2021-02-02 | 2023-12-31 |
| Central Texas Groundwater Conservation District | Texas | 2018-08-22 | 2020-12-31 |
| Coastal Bend Groundwater Conservation District | Texas | 2018-08-22 | 2025-12-31 |
| Coastal Plains Groundwater Conservation District | Texas | 2018-08-22 | 2025-12-31 |
| Cow Creek Groundwater Conservation District | Texas | 2018-08-22 | 2023-12-31 |
| Fort Bend Subsidence District | Texas | 2018-08-22 | 2025-12-31 |
| Gonzales County Underground Water Conservation District | Texas | 2019-01-05 | 2025-12-31 |
| Harris-Galveston Subsidence District | Texas | 2019-01-05 | 2025-12-31 |
| Hays Trinity Groundwater Conservation District | Texas | 2018-08-22 | 2023-12-31 |
| Hemphill County Underground Water Conservation District | Texas | 2022-01-01 | 2023-12-31 |
| High Plains Water District | Texas | 2022-01-01 | 2025-12-31 |
| Kinney County Groundwater Conservation District | Texas | 2025-03-06 | 2025-12-31 |
| Lake Medina Conservation Society | Texas | 2021-02-02 | 2023-12-31 |
| Lost Pines Groundwater Conservation District | Texas | 2021-02-02 | 2025-12-31 |
| Mid-East Texas Groundwater Conservation District | Texas | 2018-08-22 | 2023-12-31 |
| Neches and Trinity Valleys Groundwater Conservation District | Texas | 2021-02-02 | 2023-12-31 |
| Refugio Groundwater Conservation District | Texas | 2021-02-02 | 2021-12-31 |
| Texana Groundwater Conservation District | Texas | 2019-01-05 | 2021-12-31 |
| Trinity Glen Rose Groundwater Conservation District | Texas | 2018-08-22 | 2021-12-31 |
| Victoria County Groundwater Conservation District | Texas | 2018-01-03 | 2021-12-31 |