| Company | Location | Certifications | License # |
|---|---|---|---|
| Alvaro Rojo | — | Installer (Class II) | OS0038320 |
| Ashley M Chriestenson | — | Installer (Class II) | OS0034648 |
| Augustus Cole Payne | — | Installer (Class I) | OS0040471 |
| Chad A Chriestenson | — | Installer (Class II) | OS0034649 |
| David S Mcdonald | — | Designer (Site Evaluator) | OS0011855 |
| Isaac Meza | — | Installer (Class I) | OS0040522 |
| James C Gann | — | Installer (Class II)Designer (Site Evaluator) | OS0000472 |
| James Mark Sr Ivy | — | Installer (Class II) | OS0000479 |
| James T Coupland | — | Installer (Class I) | OS0041298 |
| Jay Craig Massey | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0005694 |
| Jose M Jr Santibanez | — | Installer (Class II)Designer (Site Evaluator) | OS0024076 |
| Kyle P Harrison | — | Installer (Class II)Inspector (Maintenance Provider) | OS0035727 |
| Luther Guise | — | Installer (Class I) | OS0038006 |
| Megan Leann Santibanez | — | Installer (Class II) | OS0039063 |
| Micah Douglas Loafman | — | Installer (Class I) | OS0041227 |
| Mike F Pendergraft | — | Installer (Class I) | OS0040135 |
| Norma E Wright | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0006221 |
| Robert P Ivy | — | Installer (Class II) | OS0028648 |
| Tanner Newsom | — | Installer (Class II)Designer (Site Evaluator) | OS0038093 |
| Thomas D Wright | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0032875 |
| Tim Ray Gary | — | Installer (Class I) | OS0030447 |
| Victor P Harrison | — | Installer (Class II)Inspector (Maintenance Provider) | OS0028140 |
| Yvonne Acosta | — | Installer (Class I) | OS0008147 |
23 companies in the TCEQ OSSF (On-Site Sewage Facility) occupational licenses are based in Palo Pinto County as of 2026-07-23. Companies based elsewhere in Texas also commonly serve the county.
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