| Company | Location | Certifications | License # |
|---|---|---|---|
| Alexander Pena | — | Installer (Class II) | OS0035941 |
| Alfonso Ochoa | — | Installer (Class II)Inspector (Maintenance Provider) | OS0040224 |
| Alfred Charles Sanders | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0003282 |
| Alton B Hood | — | Installer (Class II)Inspector (Maintenance Provider) | OS0004519 |
| Brandon J George | — | Installer (Class II)Inspector (Maintenance Provider) | OS0029393 |
| Brent W Mcdonald | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0031648 |
| Burton Dee Crumpton | — | Installer (Class II) | OS0008047 |
| Carlos A Jr Gomez | — | Installer (Class II)Designer (Site Evaluator) | OS0035085 |
| Carlos A Morales | — | Installer (Class II)Inspector (Maintenance Provider) | OS0036050 |
| Chase L Mink | — | Installer (Class II) | OS0039087 |
| Chris W Breedlove | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0019047 |
| Christian Dubois | — | Designer (Site Evaluator) | OS0036932 |
| Cody Dillard | — | Installer (Class II)Inspector (Maintenance Provider) | OS0039953 |
| Cody Lynn Deese | — | Installer (Class I) | OS0035488 |
| Cristian Mendez | — | Installer (Class I) | OS0040195 |
| Dalton Beal | — | Installer (Class I) | OS0040009 |
| Daniel C Arellano | — | Installer (Class II) | OS0032088 |
| David A Wilkins | — | Inspector (Maintenance Provider) | MP0001538 |
| David B Martin | — | Installer (Class II)Inspector (Maintenance Provider) | OS0000891 |
| Erik G Batie | — | Installer (Class II) | OS0030171 |
| Eustaquio Jr Saenz | — | Installer (Class II) | OS0029055 |
| Fred Allen Davis | — | Installer (Class I) | OS0039997 |
| Garry L Jr Christian | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0035094 |
| Glenn Smith | — | Installer (Class I) | OS0038769 |
| Gustavo R Sanchez | — | Installer (Class I) | OS0040298 |
| Hayden Crymes | — | Installer (Class I) | OS0040349 |
| Hayden Rex Caviness | — | Installer (Class II) | OS0041478 |
| Heather Anne Mccarty | — | Designer (Site Evaluator) | OS0034429 |
| Isai Jr Leon | — | Installer (Class I) | OS0039097 |
| Isaias Sanchez | — | Installer (Class II) | OS0035478 |
| Israel Medardo Quintanilla | — | Installer (Class I) | OS0039958 |
| Jacob Arroyo | — | Installer (Class II) | OS0039808 |
| James G Smith | — | Inspector (Maintenance Provider) | MP0002285 |
| James Mitchell Pledger | — | Designer (Site Evaluator) | OS0019782 |
| James Thomas Mcclanahan | — | Installer (Class II) | OS0038420 |
| Jeffery Kulaga | — | Installer (Class I) | OS0040891 |
| Jesse R Dauer | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0033663 |
| Jose Manuel Sanchez | — | Installer (Class I) | OS0041446 |
| Jose Perez | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0036813 |
| Juan Carlos Sanchez | — | Installer (Class II) | OS0037561 |
| Lane David Carroll | — | Installer (Class I) | OS0038959 |
| Larry B Wintters | — | Installer (Class II) | OS0028353 |
| Melania Jett | — | Installer (Class II) | OS0040563 |
| Michael L Carter | — | Installer (Class II)Designer (Site Evaluator) | OS0028671 |
| Nicholas Bobby Rousseau | — | Installer (Class I) | OS0038817 |
| Nicholas R Sanders | — | Installer (Class I) | OS0037930 |
| Nicolas Garza | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0031136 |
| Rachel E Moreno | — | Installer (Class I)Inspector (Maintenance Provider) | OS0028750 |
| Rickey L Roberts | — | Installer (Class II) | OS0002884 |
| Riley Foshee | — | Installer (Class II)Inspector (Maintenance Provider) | OS0039517 |
| Ruben Lopez | — | Installer (Class I) | OS0039732 |
| Ryan Adam Kubiak | — | Installer (Class I) | OS0039984 |
| Ryan Iii Powell | — | Installer (Class II) | OS0034258 |
| Salvador F Sanchez | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0028452 |
| Samuel L Mink | — | Inspector (Maintenance Provider) | MP0002037 |
| Scott Dean Smith | — | Installer (Class I) | OS0040680 |
| Scott T Krugler | — | Designer (Site Evaluator) | OS0009412 |
| Shannon D Sr Banks | — | Installer (Class II) | OS0031138 |
| Starla L Taylor | — | Installer (Class II)Inspector (Maintenance Provider) | OS0038614 |
| Thomas Allen Rs Boeker | — | Designer (Site Evaluator) | OS0006808 |
| Thomas Neal Clemens | — | Installer (Class II)Inspector (Maintenance Provider) | OS0006273 |
61 companies in the TCEQ OSSF (On-Site Sewage Facility) occupational licenses are based in Smith County as of 2026-07-23. Companies based elsewhere in Texas also commonly serve the county.
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