Angelina and Nacogdoches WCID No. 1
Angelina and Neches River Authority
Athens
Beaumont
Bridge City
Carthage
Center
G-M Water Supply Corporation
Groves
Huntington
Houston County WCID No. 1
Jacksonville
Jasper
Kilgore
Lake Livingston Water Supply Corporation
Lindale Rural Water Supply Corporation
Lower Neches Valley Authority
Lufkin
Lumberton Municipal Utility District
Mauriceville Municipal Utility District
Nacogdoches
Orange
Orange County WCID No. 1
Palestine
Port Arthur
Port Neches
Sabine River Authority
San Augustine
Silsbee
Southern Utilities Company
Tyler