| Company | Location | Certifications | License # |
|---|---|---|---|
| Adam Cantoni | Morgantown, WV | Installer (Class I) | 54-19-047 |
| Andrew R. Dalton | Morgantown, WV | Installer (Class I) | 54-22-018 |
| Arnold Watts | Blacksville, WV | Installer (Class II) | 54-14-A-013 |
| Barry Joseph Barnett | Morgantown, WV | Installer (Class II) | 54-17-A-008 |
| Barry Nicholson | Morgantown, WV | Installer (Class I) | 54-23-034 |
| Bradley A. Palmer | Morgantown, WV | Installer (Class I) | 54-19-036 |
| Bradley W. Yost | Fairview, WV | Installer (Class I) | 54-11-022 |
| Brandon Teed Whittaker | Fairview, WV | Installer (Class II) | 54-24-A-006 |
| Brian Stout | Core, WV | Installer (Class II) | 54-26-A-062 |
| Cameron Halloran | Morgantown, WV | Installer (Class II) | 54-25-A-038 |
| Christopher Scott Kyle | Morgantown, WV | Installer (Class II) | 54-24-A-0023 |
| Christopher W. Ruckle | Morgantown, WV | Installer (Class I) | 54-21-007 |
| David D. Daniels | Morgantown, WV | Installer (Class II) | 54-16-A-017 |
| David R. Spears | Blacksville, WV | Installer (Class I) | 54-04-0003 |
| David Z. Holtzer | Morgantown, WV | Installer (Class I) | 54-12-009 |
| Dennis Lee Blosser | Morgantown, WV | Installer (Class II) | 54-91-A-0002 |
| Derick Allen Gilmore | Morgantown, WV | Installer (Class II) | 54-05-A-0073 |
| Donald L. Hilling | Morgantown, WV | Installer (Class II) | 54-84-A-0018 |
| Edward T. Cogar | Maidsville, WV | Installer (Class II) | 54-87-A-0109 |
| Edward Velickoff | Morgantown, WV | Installer (Class II) | 54-06-A-0077 |
| Fred W. Friend | Morgantown, WV | Installer (Class II) | 54-76-A-0743 |
| Grant Snider | Morgantown, WV | Installer (Class I) | 54-02-0055 |
| Henry Triplett | Morgantown, WV | Installer (Class I) | 54-03-0035 |
| John Dubowski III | Morgantown, WV | Installer (Class II) | 54-25-A-030 |
| Jonathan D. Hopkins | Morgantown, WV | Installer (Class II) | 54-07-A-0072 |
| Joshua M. Fleming | Morgantown, WV | Installer (Class I) | 54-19-031 |
| Ki-jana Maurice Lofton | Morgantown, WV | Installer (Class I) | 54-23-026 |
| Larry W. Goff | Morgantown, WV | Installer (Class II) | 54-99-A-0001 |
| Louis Krushansky | Morgantown, WV | Installer (Class II) | 54-90-A-0006 |
| Mark A. Golden | Morgantown, WV | Installer (Class II) | 54-94-A-0028 |
| Mark D. Hagedorn | Morgantown, WV | Installer (Class II) | 54-76-A-0755 |
| Marvin Noel Kennedy | Morgantown, WV | Installer (Class II) | 54-86-A-0075 |
| Matthew Behnam | Morgantown, WV | Installer (Class I) | 54-12-020 |
| Matthew R. Eddy | Maidsville, WV | Installer (Class II) | 54-21-A-041 |
| Michael Scott Corley | Maidsville, WV | Installer (Class II) | 54-26-A-028 |
| Michael Timmons | Morgantown, WV | Installer (Class I) | 54-25-019 |
| Nathan G. Kinsley | Morgantown, WV | Installer (Class II) | 54-21-A-023 |
| Nathaniel S. Rapp | Morgantown, WV | Installer (Class I) | 54-21-021 |
| Richard D. Cato | Morgantown, WV | Installer (Class II) | 54-07-A-0018 |
| Richard Lee Stefanick | Morgantown, WV | Installer (Class II) | 54-88-A-0001 |
| Richard Thomas Brown | Morgantown, WV | Installer (Class I) | 54-22-057 |
| Robert L Lambert Jr. | Morgantown, WV | Installer (Class I) | 54-25-020 |
| Rodney A. Varner | Core, WV | Installer (Class II) | 54-90-A-0013 |
| Rodney W. Baker | Morgantown, WV | Installer (Class I) | 54-12-008 |
| Terry J. Miller | Granville, WV | Installer (Class I) | 54-03-0038 |
| Thomas L. Martin | Fairview, WV | Installer (Class II) | 54-21-A-043 |
| Tracey L Willard | Pentress, WV | Installer (Class II) | 54-02-A-0070 |
| Trey Satterfield | Morgantown, WV | Installer (Class I) | 54-24-004 |
| William B. Johnson | Morgantown, WV | Installer (Class I) | 54-17-039 |
| William Randolph Moore | Morgantown, WV | Installer (Class II) | 54-23-A-015 |
| Zachary Duley | Morgantown, WV | Installer (Class I) | 54-25-042 |
| Zachary Murphy | Morgantown, WV | Installer (Class II) | 54-24-0063 |
| Zachary Shane King | Fairview, WV | Installer (Class II) | 54-21-A-015 |
53 companies in the West Virginia OEHS certified onsite sewage system installers are based in Monongalia County as of 2026-07-23. Companies based elsewhere in West Virginia also commonly serve the county.
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