| Company | Location | Certifications | License # |
|---|---|---|---|
| Agustin H Garcia | — | Installer (Class II)Inspector (Maintenance Provider) | OS0026223 |
| Andrew Greene Grubbs | — | Designer (Site Evaluator) | OS0010430 |
| Andrew Lee Jackson | — | Installer (Class II) | OS0039096 |
| April G Rigby | — | Designer (Site Evaluator) | OS0029948 |
| Barron C Williams | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0031155 |
| Bobby L Byrd | — | Inspector (Maintenance Provider) | MP0000207 |
| Brian K Freeman | — | Installer (Class II)Inspector (Maintenance Provider) | OS0012770 |
| Byron F Lilly | — | Installer (Class I) | OS0032269 |
| Byron West | — | Installer (Class I) | OS0040364 |
| Casey Gonzales | — | Installer (Class II)Inspector (Maintenance Provider) | OS0036935 |
| Chad K Crowder | — | Installer (Class I) | OS0030200 |
| Charlie Frank Supak | — | Installer (Class II)Inspector (Maintenance Provider) | OS0004683 |
| Clinton Hill Mcgee | — | Installer (Class II) | OS0006786 |
| Corrie H Smith | — | Designer (Site Evaluator) | OS0029488 |
| Curtis D Christian | — | Installer (Class I)Inspector (Maintenance Provider) | OS0008272 |
| Daniel Dixon Balboa | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0005415 |
| Daniel R Rs Gonzalez | — | Designer (Site Evaluator) | OS0011067 |
| David J Smith | — | Installer (Class II)Inspector (Maintenance Provider) | OS0000658 |
| Douglas A Wheatley | — | Inspector (Maintenance Provider) | MP0000507 |
| Edwin Diego | — | Installer (Class I) | OS0041434 |
| Efrain Pioquinto | — | Installer (Class II)Inspector (Maintenance Provider) | OS0032095 |
| Eliodoro Villasenor Nunez | — | Inspector (Maintenance Provider) | MP0002596 |
| Eric D Vangaasbeek | — | Designer (Site Evaluator) | OS0029490 |
| Eric Jatzlau | — | Installer (Class I) | OS0039157 |
| Eric Paredes | — | Installer (Class I) | OS0041209 |
| Francisco Javier Mendez | — | Installer (Class I) | OS0040343 |
| Fred K Van Cura | — | Installer (Class II) | OS0026232 |
| Greg W Boyce | — | Installer (Class II) | OS0001569 |
| Gregory F Nesbitt | — | Installer (Class II)Designer (Site Evaluator) | OS0028950 |
| James A Lindsey | — | Installer (Class II) | OS0024066 |
| James C Jr Kuykendall | — | Installer (Class II)Inspector (Maintenance Provider) | OS0024698 |
| James M Ashman | — | Installer (Class II)Inspector (Maintenance Provider) | OS0027249 |
| James Pearcy Harris | — | Inspector (Maintenance Provider) | MP0001213 |
| Janet Villasenor | — | Installer (Class II) | OS0038908 |
| Jarret M New | — | Installer (Class II)Inspector (Maintenance Provider) | OS0037752 |
| Jeronimo Calvillo | — | Installer (Class I) | OS0038939 |
| Jimmy Lee Ward | — | Installer (Class II) | OS0005464 |
| John D Thames | — | Installer (Class II) | OS0000823 |
| John K Parker | — | Installer (Class II)Inspector (Maintenance Provider) | OS0031388 |
| John W Riddle | — | Installer (Class II) | OS0032744 |
| Jose L Jr Ortega | — | Installer (Class II)Inspector (Maintenance Provider) | OS0026532 |
| Joseph W Jamieson | — | Installer (Class II)Inspector (Maintenance Provider) | OS0031389 |
| Keith J Pendleton | — | Installer (Class II)Inspector (Maintenance Provider) | OS0019036 |
| Kyle B Rs Dehart | — | Designer (Site Evaluator) | OS0022979 |
| Kyle R Higginbotham | — | Installer (Class II)Inspector (Maintenance Provider) | OS0039982 |
| Lee Iii Irick | — | Installer (Class II)Inspector (Maintenance Provider) | OS0002261 |
| Leslie L Cain | — | Installer (Class II)Inspector (Maintenance Provider) | OS0003005 |
| Liliana Posada | — | Installer (Class I) | OS0031239 |
| Loretta Stegen Nesbitt | — | Installer (Class I)Designer (Site Evaluator) | OS0034889 |
| Marc W Jr Western | — | Installer (Class I) | OS0032737 |
| Mark Alan Coffman | — | Installer (Class II)Inspector (Maintenance Provider) | OS0005793 |
| Matthew Pittman | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0039146 |
| Melinda Irick | — | Inspector (Maintenance Provider) | MP0000916 |
| Menel B Johnson | — | Designer (Site Evaluator) | OS0035666 |
| Miguel Diaz | — | Installer (Class II)Inspector (Maintenance Provider) | OS0032558 |
| Mike Anthony Rybarski | — | Installer (Class II) | OS0001698 |
| Nicholas Paul Vandenbroek | — | Designer (Site Evaluator) | OS0040649 |
| Patrick Charles Gregory | — | Installer (Class II)Inspector (Maintenance Provider) | OS0029305 |
| Raymond G Mick | — | Installer (Class II) | OS0021453 |
| Raymond Vallejo | — | Installer (Class II)Inspector (Maintenance Provider) | OS0026239 |
| Robert Chris Coffman | — | Inspector (Maintenance Provider) | MP0000008 |
| Ronald P Parker | — | Installer (Class II) | OS0005353 |
| Ronald W Lawrence | — | Installer (Class II) | OS0021083 |
| Rowdy Thames | — | Installer (Class I) | OS0035423 |
| Roy Gene Odell | — | Installer (Class II) | OS0004850 |
| Stephen Frank Rs Jetton | — | Designer (Site Evaluator) | OS0010711 |
| Steven Miguel Rs Gonzalez | — | Designer (Site Evaluator) | OS0008947 |
| Steven Ray Gillette | — | Installer (Class I) | OS0040534 |
| Steven T White | — | Installer (Class II)Inspector (Maintenance Provider) | OS0022900 |
| Thomas R Pope | — | Designer (Site Evaluator) | OS0029865 |
| Troy D Green | — | Installer (Class II) | OS0005431 |
| Vanessa L Jones | — | Installer (Class II)Inspector (Maintenance Provider) | OS0034635 |
| Victoria Gustilo Orcine | — | Designer (Site Evaluator) | OS0035611 |
| Walter J Graner | — | Installer (Class II) | OS0027728 |
| Willie Dale Blume | — | Installer (Class II)Inspector (Maintenance Provider) | OS0028875 |
| Zachary F Frederick | — | Inspector (Maintenance Provider) | MP0002808 |
76 companies in the TCEQ OSSF (On-Site Sewage Facility) occupational licenses are based in Hays County as of 2026-07-23. Companies based elsewhere in Texas also commonly serve the county.
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