| Argyle Water Supply Corporation | Texas | 2018-01-10 | 2020-12-31 |
| Bandera, Uvalde, Medina & Real County - Utopia Vanderpool Area ESD No. 1 | Texas | 2018-01-10 | 2026-12-31 |
| Bastrop County Emergency Services District No. 2 | Texas | 2018-01-10 | 2026-12-31 |
| Bastrop-Travis Counties Emergency Services District No. 1 | Texas | 2018-01-10 | 2026-12-31 |
| Bell County Emergency Services District No. 1 | Texas | 2022-01-10 | 2026-12-31 |
| Bexar County Emergency Services District No. 11 | Texas | 2018-01-10 | 2026-12-31 |
| Bosque County Emergency Services District No. 1 | Texas | 2018-01-10 | 2026-12-31 |
| Brazos County Emergency Services District No. 2 | Texas | 2018-01-10 | 2021-12-31 |
| Burnet County Emergency Services District No. 7 | Texas | 2018-01-10 | 2026-12-31 |
| Burnet County Emergency Services District No. 8 | Texas | 2018-01-10 | 2024-12-31 |
| Comal County Emergency Services District No. 1 | Texas | 2020-02-10 | 2022-12-31 |
| Comal County Emergency Services District No. 2 | Texas | 2018-01-10 | 2019-12-31 |
| Comal County Emergency Services District No. 4 | Texas | 2018-01-10 | 2022-12-31 |
| Comal County Emergency Services District No. 5 | Texas | 2018-01-10 | 2022-12-31 |
| Crane County Emergency Services District #1 | Texas | 2023-01-11 | 2026-12-31 |
| Duval County Emergency Services District No. 2 | Texas | 2021-01-07 | 2024-12-31 |
| Ector County Utility District | Texas | 2025-01-10 | 2025-12-31 |
| Ellis County Emergency Services District #1 | Texas | 2023-01-11 | 2026-12-31 |
| Ellis County Emergency Services District No. 2 | Texas | 2018-01-10 | 2026-12-31 |
| Ellis County Emergency Services District No. 4 | Texas | 2021-01-07 | 2026-12-31 |
| Ellis County Emergency Services District No. 5 | Texas | 2019-01-07 | 2026-12-31 |
| Ellis County Emergency Services District No. 6 | Texas | 2018-01-10 | 2026-12-31 |
| Ellis County Emergency Services District No. 9 | Texas | 2024-01-10 | 2026-12-31 |
| Ellis Emergency Services District No. 5 | Texas | 2018-01-10 | 2018-12-31 |
| Hays County Emergency Services District No. 4 | Texas | 2018-01-10 | 2026-12-31 |
| Hays County Emergency Services District No. 5 | Texas | 2018-01-10 | 2026-12-31 |
| Hays County Emergency Services District No. 9 | Texas | 2018-01-10 | 2026-12-31 |
| Henderson County Emergency Services District No. 8 | Texas | 2025-01-10 | 2026-12-31 |
| Hill County Emergency Services District No. 2 | Texas | 2018-01-10 | 2026-12-31 |
| Hudspeth County Emergency Services District No. 2 | Texas | 2020-02-10 | 2026-12-31 |
| Jasper County Emergency Services District No. 1 | Texas | 2020-02-10 | 2026-12-31 |
| Jim Wells County Emergency Services District No. 1 | Texas | 2018-01-10 | 2026-12-31 |
| Jonah Water Special Utility District | Texas | 2018-01-10 | 2026-12-31 |
| Kaufman County Emergency Services District #7 | Texas | 2023-01-11 | 2026-12-31 |
| Kaufman County Emergency Services District No. 3 | Texas | 2020-02-10 | 2026-12-31 |
| Kaufman County Emergency Services District No. 6 | Texas | 2018-01-10 | 2026-12-31 |
| Lake Pointe Municipal Utility District | Texas | 2022-01-10 | 2025-12-31 |
| Limestone County Emergency Services District No. 2 | Texas | 2023-01-11 | 2023-12-31 |
| Llano County Emergency Services District No. 2 | Texas | 2018-01-10 | 2026-12-31 |
| Medina County Emergency Services District No. 6 | Texas | 2025-01-10 | 2026-12-31 |
| Midland County Utility District | Texas | 2024-01-10 | 2026-12-31 |
| Multi-County Water Supply Corporation | Texas | 2020-02-10 | 2026-12-31 |
| North Blanco County Emergency Services District No. 1 | Texas | 2023-01-11 | 2024-12-31 |
| North Hays County ESD No. 1 | Texas | 2018-01-10 | 2018-12-31 |
| North Hays County Emergency Services District No. 1 | Texas | 2019-01-07 | 2026-12-31 |
| Palo Pinto County Emergency Services District No. 1 | Texas | 2018-01-10 | 2026-12-31 |
| Real County Emergency Services District No. 1 | Texas | 2025-01-10 | 2026-12-31 |
| Riverside Special Utility District | Texas | 2018-01-10 | 2026-12-31 |
| Southwest Leon County Emergency Services District No. 2 | Texas | 2018-01-10 | 2026-12-31 |
| Tanglewood Forest Limited District | Texas | 2018-01-10 | 2026-12-31 |
| Texas Section of the American Water Works Association | Texas | 2018-01-10 | 2026-12-31 |
| Texas State Association of Fire and Emergency Services Districts | Texas | 2018-01-10 | 2026-12-31 |
| Texas Water Utility Association | Texas | 2020-02-10 | 2026-12-31 |
| Travis County Emergency Services District No. 11 | Texas | 2018-01-10 | 2018-09-06 |
| Travis County Emergency Services District No. 16 | Texas | 2021-01-07 | 2026-12-31 |
| Travis County Emergency Services District No. 2 | Texas | 2018-01-10 | 2026-12-31 |
| Travis County Emergency Services District No. 8 | Texas | 2018-01-10 | 2026-12-31 |
| Travis County Municipal Utility District No. 22 | Texas | 2025-01-10 | 2026-12-31 |
| Travis County Water Control & Improvement District No. 10 | Texas | 2022-01-10 | 2026-12-31 |
| Upshur County Emergency Services District No. 1 | Texas | 2024-01-10 | 2026-12-31 |
| UtopiaVanderpool Area ESD No. 1 | Texas | 2024-01-10 | 2024-12-31 |
| Uvalde County Emergency Services District No. 2 | Texas | 2024-01-10 | 2026-12-31 |
| Van Zandt County Emergency Services District No. 2 | Texas | 2022-01-10 | 2024-12-31 |
| Williamson County Emergency Services District No. 1 | Texas | 2025-01-10 | 2026-12-31 |
| Williamson County Emergency Services District No. 11 | Texas | 2025-01-10 | 2026-12-31 |
| Williamson County Emergency Services District No. 12 | Texas | 2018-01-10 | 2026-12-31 |
| Williamson County Emergency Services District No. 3 | Texas | 2018-01-10 | 2026-12-31 |
| Williamson County Emergency Services District No. 4 | Texas | 2018-01-10 | 2026-12-31 |
| Williamson County Emergency Services District No. 5 | Texas | 2022-01-10 | 2026-12-31 |
| Williamson County Emergency Services District No. 6 | Texas | 2023-01-11 | 2026-12-31 |
| Williamson County Emergency Services District No. 7 | Texas | 2022-01-10 | 2026-12-31 |