| A.D.G. Excavation Inc. | Redmond, OR | Installer | 39845 |
| Abe Jones Septic Service, Inc. | Bend, OR | InstallerPumper | 35223 |
| Advanced Systems Portable Restrooms, Inc. | Bend, OR | Pumper | 37457 |
| Ae West, Inc, Dba Collins & Sons Excavating | Redmond, OR | Installer | 37938 |
| Anderson Septic Inc | La Pine, OR | Pumper | 39962 |
| Armando Villalobos Sanchez | Redmond, OR | Installer | 39651 |
| B & L Excavation, Llc, Dba B & L Excavation | Bend, OR | Installer | 39058 |
| Babcock Bros., Inc. | Bend, OR | Installer | 36962 |
| Back Country Comfort Llc | Bend, OR | Pumper | 39956 |
| Badlands Building And Design Llc | Bend, OR | Installer | 39840 |
| Badlands Development, Llc | La Pine, OR | Installer | 39189 |
| Barrier Excavation Llc | Sisters, OR | Installer | 38604 |
| Baseline Excavation Nw Llc | Redmond, OR | Installer | 39464 |
| Bend Excavating, Llc | Bend, OR | Installer | 39146 |
| Black Sage Dirt Works Llc | Bend, OR | Installer | 39442 |
| Bolling Ventures, Llc Dba Sitting Pretty Potties | Bend, OR | Pumper | 39692 |
| Branchwater Excavation & Septic Llc | Bend, OR | Installer | 39882 |
| Brinkley Construction, Llc | Redmond, OR | Installer | 39950 |
| Bs Investing, Inc, Dba Little John'S Portable Toilets | Bend, OR | Pumper | 38823 |
| C & S Dirt Works, Llc | La Pine, OR | Installer | 39213 |
| C2 Excavation Llc | La Pine, OR | Installer | 39631 |
| Cardwell Construction, Llc | Redmond, OR | Installer | 39794 |
| Cascade Land Development Llc | Sunriver, OR | Installer | 39256 |
| Cavallaro Earthworks Llc | Redmond, OR | Installer | 39871 |
| Central Cascade Excavation Company | La Pine, OR | Installer | 39870 |
| Central Oregon Rooter & Excavation Llc | Redmond, OR | Installer | 39428 |
| Central Oregon Sanitation Services, Inc, Dba Lapine Septic Service | La Pine, OR | Pumper | 38909 |
| Christiansen'S Contracting Company, Llc | Redmond, OR | Installer | 39015 |
| Clawson Construction & Maintenance Llc | Terrebonne, OR | Installer | 39924 |
| Clear Path Excavation Llc | Bend, NJ | Installer | 39801 |
| Congo Group Llc | Redmond, OR | Installer | 39703 |
| Ctl Construction, Inc. | Bend, OR | Installer | 37959 |
| D-N-A Construction & Excavation, Inc | La Pine, OR | Installer | 39163 |
| D. Belgarde Excavation, Inc | Bend, OR | Installer | 39111 |
| Del Barber Excavation, Inc. | Bend, OR | Installer | 36728 |
| Dirty John'S Land Development Llc, Dba American Septic Pumping And Services | Bend, OR | InstallerPumper | 39469 |
| Endurance Excavation & Construction Llc | Bend, OR | Installer | 39143 |
| G2 Excavating Llc | Bend, OR | Installer | 39537 |
| Graeveworks Llc Dba Bee Excavation | Terrebonne, OR | Installer | 39715 |
| Grandma'S Outhouses, Llc | Bend, OR | Pumper | 39354 |
| Guy With An Excavator Inc. | Bend, OR | Installer | 39914 |
| H3 Excavation & Construction Llc | Redmond, OR | Installer | 39492 |
| Homestead Excavation, Inc. | Redmond, OR | Installer | 37175 |
| Hopkins Excavation, Llc | La Pine, OR | Installer | 39751 |
| Iron Rock Excavation Llc | Bend, OR | Installer | 39771 |
| Jake Russell Excavation Llc | La Pine, OR | Installer | 38581 |
| Jaron Mckernan Enterprises, Inc. | Redmond, OR | Installer | 38496 |
| Jay & C Construction Corp | Redmond, OR | Installer | 39421 |
| Jc Medina Excavation Llc | Redmond, OR | Installer | 39395 |
| Jdt Concrete, Inc | Bend, OR | Installer | 39202 |
| Jeremy Dahl Construction, Llc | La Pine, OR | Installer | 38592 |
| Jeremy Thomas Dupuis, Dba Jdp Land Development & Demolition | Bend, OR | Installer | 39936 |
| John Milton Construction Llc | Bend, OR | Installer | 37057 |
| Jr Faulkner Excavation Ii, Inc | Bend, OR | Installer | 38843 |
| K2 Excavation And Construction, Llc | Terrebonne, OR | Installer | 39824 |
| King Cole Excavation & Construction Llc | Redmond, OR | Installer | 39821 |
| L & C Company, Llc | Bend, OR | Pumper | 39004 |
| La Pine Redi-Mix, Inc., Dba Matthews Construction | La Pine, OR | Installer | 36684 |
| Lc Industries, Inc, Dba Leonardo Excavation | La Pine, OR | Installer | 39106 |
| Leavn Trax Excavation Llc | La Pine, OR | Installer | 39433 |
| Main Beam Contractor, Inc, Dba Main Beam Excavation | La Pine, OR | Installer | 39164 |
| Main Beam Septic Specialist, Llc | La Pine, OR | Installer | 39972 |
| Mark Latham Excavation, Inc., Dba Latham Excavation | Bend, OR | Installer | 36668 |
| Mbm Excavation Corp | Bend, OR | Installer | 38967 |
| Mcdonald Concrete Construction Inc | La Pine, OR | Installer | 39494 |
| Mehan Development Llc | Bend, OR | Installer | 39907 |
| Miller Excavation, Llc | Redmond, OR | Installer | 39207 |
| Olin Sitz Excavation | Sisters, OR | Installer | 39100 |
| Oregon Water Utilities, Inc, Dba Mcdonald Septic Service | Redmond, OR | Pumper | 38243 |
| Osborne Excavation Inc, Dba Stan Russell Construction | La Pine, OR | Installer | 39203 |
| Over The Top Plumbing Llc | Bend, OR | Pumper | 39740 |
| Paul Humphrey Construction, Inc. | Bend, OR | Installer | 38450 |
| Peak Construction And Excavation Llc | Bend, OR | Installer | 39942 |
| Petrie Enterprises Inc | Bend, OR | Installer | 39934 |
| Polston Flooring Installations Llc, Dba Double M Excavation | Redmond, OR | Installer | 39722 |
| R3 Coastal Llc, Dba Ss Hauling | Bend, OR | Pumper | 39665 |
| Ram Construction, Llc, Dba Cascade Septic | La Pine, OR | InstallerPumper | 37842 |
| Rbe, Inc | Bend, OR | InstallerPumper | 38323 |
| Reinhardt Homes Llc | Redmond, OR | Installer | 39092 |
| Reinhart Construction, Inc. | Bend, OR | Installer | 37585 |
| Relson Contracting Llc | Redmond, OR | Installer | 39849 |
| Robinson & Owen Heavy Construction Inc. | Sisters, OR | Installer | 37952 |
| Shannon Excavation Llc | Bend, OR | Installer | 39917 |
| Shields Septic Tank Service, Inc | La Pine, OR | Pumper | 36217 |
| Silver Rock Services, Inc. | Bend, OR | Installer | 39708 |
| Sisu Consulting Llc | Bend, OR | Installer | 39922 |
| Smalling Construction, Inc. | Bend, OR | Installer | 38948 |
| South County Concrete & Construction Llc | La Pine, OR | Installer | 39311 |
| Spencer Smith | Prineville, OR | Installer | 39210 |
| Stephen P. Pilling Excavation | Redmond, OR | Installer | 38072 |
| Summit Excavation, Inc. | Bend, OR | Installer | 38182 |
| Super State Llc | Bend, OR | Installer | 39796 |
| Superior Sanitation, Llc, Dba Muck Septic Service | Redmond, OR | InstallerPumper | 38991 |
| Surfacetek, Inc | La Pine, OR | Installer | 39968 |
| Talerico Excavating Llc | Sisters, OR | Installer | 39078 |
| Terry N. Shine, Dba Terry Shine Excavating | Bend, OR | Installer | 36994 |
| Tewalt & Sons Inc. | Sisters, OR | Installer | 35215 |
| Todd Eugene Wylder | La Pine, OR | Installer | 39358 |
| Tumalo Excavation, Llc | Bend, OR | Installer | 39313 |
| Yon Olsen, Dba Cleanline Septic Services | Bend, OR | Pumper | 39834 |
| York Bros Excavation, Llc, Dba York Bros. Excavation | Redmond, OR | Installer | 38674 |