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| Company | Location | County | Certifications | License # |
|---|---|---|---|---|
| Mammoth Creek Excavation | North Las Vegas, UT | Kane | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 03091-OSP |
| Mark Rees | Brigham City, UT | Box Elder | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 02767-OSP |
| Martell Enterprises III Inc. | Wanship, UT | Summit | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2) | 02830-OSP |
| Mathews Construction LLC | Duchesne, UT | — | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 03511-OSP |
| McKinnon Ventures | Spanish Fork, UT | Uintah | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 03271-OSP |
| MEJ Engineering | Mendon, UT | Box Elder | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 04295-OSP |
| Mikayla Hibbert | Kemmerer, UT | Out of State | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2) | 04114-OSP |
| Mike Huitt Construction, Inc. | Moab, UT | Grand | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 03856-OSP |
| Miller Excavation | Declo, UT | Uintah | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2) | 00126-OSP |
| Millies Excavation | Duchesne, UT | — | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2) | 04219-OSP |
| Millstream | Heber, UT | — | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2) | 03121-OSP |
| Mistidawn Ramirez | North Logan, UT | Cache | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 03706-OSP |
| Misty Sanderson | Afton, UT | Out of State | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2) | 04001-OSP |
| MK Erkkila LC | Scofield, UT | — | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2) | 00505-OSP |
| MK Erkkila, L.C. | Helper, UT | Carbon | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 02720-OSP |
| MKJ Construction | Fairview, UT | — | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2) | 02710-OSP |
| MKJ Construction | Fairview, UT | — | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2) | 02725-OSP |
| MKJ Construction LLC | Fairview, UT | — | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2) | 00271-OSP |
| Moab Contractors Collective | Moab, UT | Grand | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2) | 04257-OSP |
| Moab Geotechnical Group | Moab, UT | Grand | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 04175-OSP |
| Moab Geotechnical Group LLC | Moab, UT | Grand | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 03731-OSP |
| Moshe Calm | Catheys Valley, UT | Out of State | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 04320-OSP |
| Mountain Engineering | Morgan, UT | — | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2) | 03026-OSP |
| Mountain Land Solutions | Fairview, UT | — | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2) | 04437-OSP |
| Mountain Point Engineering | Draper, UT | — | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 02260-OSP |
| MTN Edge Excavation | Mendon, UT | Cache | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2) | 04603-OSP |
| MTN Valley Excavation | Spanish Fork, UT | Uintah | Onsite Wastewater Professional (Level 1)Onsite Wastewater Professional (Level 2)Onsite Wastewater Professional (Level 3) | 04577-OSP |
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