| Business | Phone |
| Absolute Underground Works 10214 Georgibelle Dr, Houston 77043 | (713) 468-1480 |
| Bellewood Construction Co Inc 1438 Campbell Rd, Houston 77055 | (713) 461-3394 |
| Boyer Inc 9318 Reid Lake Dr, Houston 77064 | (713) 466-5395 |
| Brh Garver Inc 7600 S Santa Fe Dr, Houston 77061 | (713) 921-2929 |
| Canatxx Energy Ventures 777 N Eldridge Pkwy 200, Houston 77079 | (281) 679-0202 |
| Cardinal Utilities Houston 77081 | (713) 666-9977 |
| Colt Utilities Inc 2333 Hoskins Dr, Houston 77080 | (713) 465-6181 |
| Colt Utilities Inc 8426 Winkler Dr, Houston 77017 | (713) 644-0116 |
| Commtex Corp 12999 Fm 529 Rd, Houston 77041 | (713) 849-6880 |
| Cornerstone Utility Mntnc 9601 Jones Rd, Houston 77065 | (281) 807-9502 |
| Direct Boring & Underground Houston 77060 | (713) 724-0034 |
| E & A Underground Utilities 3920 Anderson Rd, Houston 77053 | (713) 413-9004 |
| Emerald Forest Utility Dist 9423 Mills Rd, Houston 77070 | (281) 890-3187 |
| Fishel Co 1720 N Sam Houston Pkwy E, Houston 77032 | (281) 227-2873 |
| George C Cox Inc Houston 77057 | (713) 788-2121 |
| M J Sheridan Of Texas 9015 Sweetbrush Dr, Houston 77064 | (281) 469-5810 |
| Harris County Utility 20121 1/2 Plaza East Blvd, Houston 77073 | (281) 443-0480 |
| Houston Underground Utility 10067 Green Valley Ln, Houston 77064 | (281) 847-5167 |
| Kenneth Lamb Construction Co 8214 Northline Dr, Houston 77037 | (281) 447-6245 |
| Iww Inc 723 Eastlake St, Houston 77034 | (713) 946-0817 |
| J & V Utilities 4918 Orange Grove Dr B, Houston 77039 | (281) 987-8891 |
| My Choice Utilities 11211 Katy Fwy, Houston 77079 | (713) 932-7771 |
| North Belt Utility District 1903 Jeffers Cir, Houston 77032 | (281) 987-2132 |