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| Company | Location | County | Certifications | License # |
|---|---|---|---|---|
| Office of Environmental Health & Engineering | Many Farms, UT | Out of State | Onsite Wastewater Professional (Level 1) | 04532-OSP |
| Olcott & Sons Inc | Venice, UT | Sevier | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 02395-OSP |
| Olsen Septic Service | Logan, UT | Cache | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 04517-OSP |
| Oracle Group Inc. | Cedar City, UT | Iron | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 03753-OSP |
| Oracle Group Inc. | Cedar City, UT | Iron | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 03755-OSP |
| Oracle Group Inc. | Cedar City, UT | Iron | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 03757-OSP |
| ORE Septic Solutions and Alternative Systems | Fruitland, UT | Duchesne | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 03166-OSP |
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