| Blue Ridge West MUD |
| First Colony MUD #9 |
| First Colony MUD #9 & Thunderbird UD |
| Fort Bend County MUD #115 |
| Fort Bend County MUD #129 |
| Fort Bend County MUD #149 |
| Fort Bend County MUD #23 |
| Fort Bend County MUD #24 |
| Fort Bend County MUD #26 |
| Fort Bend County MUD #42 |
| Fort Bend County MUD #46 |
| Fort Bend County MUD #47 |
| Fort Bend County MUD #48 |
| Fort Bend County MUD #49 |
| Fort Bend County WC & ID #2 |
| Harris County MUD #122 |
| Harris County WC & ID - Fondren Road |
| Meadowcreek MUD |
| Mustang Bayou Service Area |
| Northeast Oyster Creek Utility Service Area |
| Palmer Plantation MUD #1 |
| Palmer Plantation MUD #2 |
| Quail Valley Utility District |
| Served by District |
| Sienna Plantation MUD #1 |
| Sienna Plantation MUD #10 |
| Sienna Plantation MUD #12 |
| Sienna Plantation MUD #13 |
| Sienna Plantation MUD #2 |
| Sienna Plantation MUD #3 |
| Sienna Plantation MUD #4 |
| Sienna Plantation MUD #5 |
| Sienna Plantation MUD #6 |
| Sienna Plantation MUD #7 |
| Sienna Plantation Management District |
| Southwest Harris County MUD #1 |
| Thunderbird Utility District |