| Company | Location | Certifications | License # |
|---|---|---|---|
| Andersen Sewer Llc | — | Pumper | S-1192 |
| Arrow Septic And Sewer Service Llc | — | Pumper | S-1124 |
| Billings Construction Supply, Inc | — | Pumper | S-749 |
| Bogy Inc | — | Pumper | S-1062 |
| Brenda Frank Septic Tank Service | — | Pumper | S-1150 |
| C Bar J Mechanical | — | Pumper | S-1126 |
| Cotter'S Sewer Inc | — | Pumper | S-1087 |
| Kernow Inc | — | Pumper | S-1212 |
| Pace | — | Pumper | S-996 |
| Portable Restroom Service Llc | — | Pumper | S-1119 |
| Tlc-Patriot Septic And Excavation Llc | — | Pumper | S-1151 |
| Tru Pipe Inc | — | Pumper | S-1139 |
| Wells Built Homes Inc | — | Pumper | S-1155 |
13 companies in the Montana DEQ licensed septic pumpers list are based in Yellowstone County as of 2026-07-23. Companies based elsewhere in Montana also commonly serve the county.
Tell us what you need — we'll connect you with state-certified companies serving your area. No obligation.