| Company | Location | Certifications | License # |
|---|---|---|---|
| Amir Youssouf | — | Designer (Site Evaluator) | OS0040652 |
| Analisa Sonya Rs Griffith | — | Designer (Site Evaluator) | OS0038346 |
| Brandon Michael Valadez | — | Designer (Site Evaluator) | OS0041421 |
| Chris Lee Conner | — | Inspector (Maintenance Provider) | MP0002543 |
| Conner Staton | — | Designer (Site Evaluator) | OS0041050 |
| Jorge Alfredo Ramirez | — | Installer (Class II) | OS0040664 |
| Justin L Jones | — | Installer (Class II)Inspector (Maintenance Provider) | OS0034091 |
| Luis Ignacio Flores | — | Inspector (Maintenance Provider) | MP0001487 |
| Randall C Moore | — | Inspector (Maintenance Provider) | MP0002124 |
| Robert L Wagstaff | — | Installer (Class II)Inspector (Maintenance Provider) | OS0005979 |
| Victoria L Vasquez | — | Installer (Class II)Inspector (Maintenance Provider) | OS0034092 |
11 companies in the TCEQ OSSF (On-Site Sewage Facility) occupational licenses are based in Dallas County as of 2026-07-23. Companies based elsewhere in Texas also commonly serve the county.
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