| Company | Location | Certifications | License # |
|---|---|---|---|
| Alejandro Moreno | — | Installer (Class I) | OS0039387 |
| Alejandro Salcido | — | Installer (Class I) | OS0041230 |
| Alonso P Natividad | — | Installer (Class II)Designer (Site Evaluator) | OS0032667 |
| Anthony T Herrera | — | Installer (Class II)Designer (Site Evaluator) | OS0031390 |
| Beatriz A Maldonado Molina | — | Installer (Class I) | OS0039721 |
| Carlos Daniel Salinas | — | Installer (Class I) | OS0039381 |
| Charles Edward Rosa | — | Installer (Class I) | OS0041198 |
| Clint J Barker | — | Installer (Class I) | OS0033705 |
| Daniel Ramon Salyers | — | Installer (Class I) | OS0035757 |
| David Kirk Hamilton | — | Installer (Class II)Designer (Site Evaluator) | OS0006623 |
| Dimber Garcia | — | Installer (Class I) | OS0038797 |
| Efren U Jr Zubia | — | Installer (Class I) | OS0034268 |
| Fidel A Pozos | — | Installer (Class I) | OS0030885 |
| Fidel T Cardona | — | Installer (Class I) | OS0030493 |
| Francisco Raymundo Bejarano | — | Installer (Class I) | OS0039487 |
| Gabriel Ojeda Gonzalez | — | Installer (Class I) | OS0038330 |
| Jacob Harley Pritchett | — | Installer (Class I) | OS0036099 |
| James R Mathes | — | Installer (Class I) | OS0030889 |
| Joel Belloc | — | Installer (Class I) | OS0041212 |
| Joey P Dehart | — | Installer (Class II)Designer (Site Evaluator) | OS0008485 |
| Jonathan Burrola | — | Installer (Class I) | OS0037571 |
| Jose L Rodriguez | — | Installer (Class I) | OS0040559 |
| Joseph M Urias | — | Installer (Class II) | OS0004802 |
| Juan E Jr Davila | — | Designer (Site Evaluator) | OS0021160 |
| Justin D Graham | — | Installer (Class I)Designer (Site Evaluator) | OS0032723 |
| Kelly E Mueller | — | Installer (Class I) | OS0032257 |
| Larry James Boler | — | Installer (Class I) | OS0006309 |
| Larry Samuel Endsley | — | Installer (Class I) | OS0035751 |
| Martha Rodriguez | — | Installer (Class II)Designer (Site Evaluator) | OS0037928 |
| Matthew D Tatum | — | Installer (Class II) | OS0040237 |
| Mayford E Jr Mathes | — | Installer (Class I) | OS0030899 |
| Miguel Andres Ruiz | — | Installer (Class I) | OS0036458 |
| Obed L Aguilar | — | Installer (Class I) | OS0032177 |
| Oscar M Jr Galindo | — | Installer (Class II) | OS0027930 |
| Ricardo De Hoyos | — | Installer (Class II)Designer (Site Evaluator) | OS0031650 |
| Robert E Stalvey | — | Installer (Class II)Designer (Site Evaluator) | OS0002792 |
| Ruben M Reyes | — | Designer (Site Evaluator) | OS0028787 |
| Russell P Stalvey | — | Installer (Class II)Designer (Site Evaluator) | OS0029786 |
| Saul Natera | — | Installer (Class I) | OS0038384 |
| Saul Rodriguez Natera | — | Installer (Class I) | OS0031410 |
| Sebastian Gage Carrasco | — | Installer (Class I) | OS0040922 |
| Terry J Ohlmann | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0031922 |
42 companies in the TCEQ OSSF (On-Site Sewage Facility) occupational licenses are based in Midland County as of 2026-07-23. Companies based elsewhere in Texas also commonly serve the county.
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