| Company | Location | Certifications | License # |
|---|---|---|---|
| Aaron Cruz | — | Installer (Class II)Designer (Site Evaluator) | OS0035139 |
| Ahzai Ramirez | — | Installer (Class I) | OS0040725 |
| Alberto M Madrid | — | Installer (Class I)Designer (Site Evaluator) | OS0034850 |
| Ambrosio Rodriguez | — | Installer (Class I) | OS0041318 |
| Armando Gutierrez | — | Installer (Class II)Designer (Site Evaluator) | OS0004445 |
| Armando Morales | — | Installer (Class I) | OS0037420 |
| Austin James Adams | — | Installer (Class I) | OS0039017 |
| Barbara Kay Jones | — | Installer (Class I) | OS0021828 |
| Benito J Jr Saenz | — | Installer (Class II)Designer (Site Evaluator) | OS0032817 |
| Benjamin Franklin Velasquez | — | Installer (Class II)Designer (Site Evaluator) | OS0033211 |
| Brock R Pittman | — | Installer (Class II)Designer (Site Evaluator) | OS0035664 |
| Cassandra Lozano Vasquez | — | Installer (Class I) | OS0040677 |
| Christian G Molina | — | Installer (Class I) | OS0038305 |
| Christopher Wade Edwards | — | Installer (Class II) | OS0037853 |
| David A Rs Peck | — | Installer (Class I)Designer (Site Evaluator) | OS0027910 |
| David Earl Erwin | — | Installer (Class I) | OS0028639 |
| David Guerrero | — | Installer (Class I) | OS0038978 |
| David Gutierrez | — | Installer (Class I) | OS0040766 |
| Denise Reyes | — | Installer (Class I) | OS0041149 |
| Dimas D Avalos | — | Installer (Class II)Designer (Site Evaluator) | OS0037883 |
| Eric S Olivas | — | Installer (Class I) | OS0032383 |
| Estefani Ortiz | — | Installer (Class I) | OS0036369 |
| Frank Jr Badilla | — | Installer (Class I) | OS0040852 |
| Hazael Ruiz | — | Installer (Class I) | OS0035839 |
| Humberto Jr Pena | — | Installer (Class I) | OS0038317 |
| Jaime Flores Parra | — | Installer (Class II)Designer (Site Evaluator) | OS0030874 |
| Javier H Molinar | — | Installer (Class II)Designer (Site Evaluator) | OS0028217 |
| Jesus Jr Villarreal | — | Installer (Class I) | OS0030734 |
| John Spencer | — | Installer (Class II) | OS0038968 |
| Jonathan Navarrete | — | Installer (Class II)Designer (Site Evaluator) | OS0034620 |
| Jose J Camacho | — | Installer (Class II) | OS0040528 |
| Joshua Delmar Boicourt | — | Installer (Class I) | OS0041020 |
| Kelby Raylea Upchurch | — | Designer (Site Evaluator) | OS0038624 |
| Mabel Meraz | — | Installer (Class I) | OS0039659 |
| Manuel Montoya | — | Installer (Class I) | OS0030435 |
| Marcos Lujan | — | Installer (Class II)Inspector (Maintenance Provider) | OS0036085 |
| Mario Valdez | — | Installer (Class I) | OS0035251 |
| Milva Arely Valdez | — | Installer (Class I) | OS0039717 |
| Navor Levario | — | Installer (Class I) | OS0030433 |
| Neftaly Lopez | — | Installer (Class I) | OS0038020 |
| Norberto Iii Brito | — | Installer (Class I) | OS0032535 |
| Ramiro Jr Magana | — | Installer (Class I) | OS0033739 |
| Ramon Sotelo | — | Installer (Class I) | OS0040604 |
| Rene Suchil | — | Installer (Class I) | OS0029096 |
| Richard Mikel Lemons | — | Installer (Class II)Designer (Site Evaluator) | OS0028143 |
| Rosalee Burrola | — | Installer (Class I) | OS0036183 |
| Rusty Rocha | — | Installer (Class I) | OS0041169 |
| Samuel Esparza | — | Installer (Class I) | OS0031601 |
| Timothy Brian Couch | — | Installer (Class I) | OS0041084 |
| Tommy Ervin | — | Installer (Class I) | OS0028638 |
| William H Jr Adams | — | Installer (Class II) | OS0035640 |
| Yovanny P Corrales | — | Installer (Class I) | OS0033360 |
52 companies in the TCEQ OSSF (On-Site Sewage Facility) occupational licenses are based in Ector County as of 2026-07-23. Companies based elsewhere in Texas also commonly serve the county.
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