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| Company | Location | County | Certifications | License # |
|---|---|---|---|---|
| A Hole Perc Testing | Provo, UT | Uintah | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2) | 00476-OSP |
| A&D Jensen Contractors | Richfield, UT | Sevier | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 03631-OSP |
| Aaron Hall | Parowan, UT | Iron | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 04559-OSP |
| Aaron Holland | Moab, UT | Grand | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 04567-OSP |
| Abigail Roberts | Fruitland, UT | — | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2) | 00529-OSP |
| Action Sanitation | Kanab, UT | Kane | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2) | 03081-OSP |
| AEMT Septic | Joseph, UT | Sevier | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2) | 03031-OSP |
| Agec | St. George, UT | Washington | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2) | 02735-OSP |
| Agec | St. George, UT | — | Onsite Wastewater Professional (Level 1) | 04435-OSP |
| AGEC Inc. | St. George, UT | — | Onsite Wastewater Professional (Level 1) | 04527-OSP |
| Aja Martin | Coalville, UT | Summit | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 03956-OSP |
| AK Septic LLC | Logan, UT | Cache | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2) | 03588-OSP |
| Allen Construction and Excavation | Wallisburg, UT | — | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 00267-OSP |
| Alternative Onsite Solutions | Heber City, UT | — | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 00534-OSP |
| Amcast, LLC. | Coalville, UT | — | Onsite Wastewater Professional (Level 1) | 02615-OSP |
| Amelia Strand | Cedar City, UT | Washington | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2) | 03661-OSP |
| American Legacy Construction | Cottonwood Heights, UT | — | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 03671-OSP |
| Anderson Engineering Company Inc. | Saratoga Springs, UT | Uintah | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 02996-OSP |
| Anderson Engineering Company, Inc. | Saratoga Springs, UT | Uintah | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 04028-OSP |
| Andrew Monroy | Fredonia, UT | Out of State | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 04152-OSP |
| Andrew Pompeo | Salt Lake City, UT | — | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 04552-OSP |
| Apex Design Group | Wellsville, UT | Cache | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 02625-OSP |
| Apex Design Group | Wellsville, UT | Cache | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2) | 03266-OSP |
| Applied Geotech | St. George, UT | — | Onsite Wastewater Professional (Level 1) | 04365-OSP |
| Applied Geotechnical | Hurricane, UT | — | Onsite Wastewater Professional (Level 1) | 04442-OSP |
| Applied Geotechnical Engineering Consultant | St. George, UT | Washington | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2) | 04539-OSP |
| Applied Geotechnical Engineering Consultants | St. George, UT | — | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2) | 00173-OSP |
| Applied Geotechnical Engineering Consultants | St. George, UT | — | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2) | 04180-OSP |
| Applied Geotechnical Engineering Consultants, Inc. | Sandy, UT | — | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2) | 00214-OSP |
| Apres Build | Park City, UT | Summit | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 04255-OSP |
| Aramark | Mormon Lake, UT | — | Onsite Wastewater Professional (Level 1) | 04574-OSP |
| Arnold Person | West Jordan, UT | — | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 04637-OSP |
| Ash Creek Special Service District | Hurricane, UT | Washington | Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 04669-OSP |
| Ash Creek SSD | Hurricane, UT | Washington | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 03201-OSP |
| Ask & Partners | Payson, UT | Uintah | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 04684-OSP |
| Aspen Custom Hornes LLC | Heber City, UT | — | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 03051-OSP |
| Atkinson's Affordable Septic Design | Lehi, UT | Uintah | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 03211-OSP |
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