Cotter's Sewer, Septic and Portable Toilet Services
1750 E 8TH St, Laurel, MT 59044
✓ Montana license S-1087
Drain and sewerPortable toilets
Home / Septic pumping / Montana / Yellowstone County
Septic pumping in Yellowstone County: 13 license records are filed under the county on the Montana Department of Environmental Quality list, dated 05-20-2026. Each one shows its license number.
✓ means we found the company on the 2026 Licensed Montana Septic Pumpers, dated 05-20-2026. "No match" does not mean unlicensed. Names and phone numbers on a state list often differ from the ones in ads. Ask for the license number.
Before you call. Ask for the total price and which fees can be added: digging up or opening the lid, extra sludge, a trip charge. Ask if they pump every compartment through the main lid and check the baffles. Ask for the license or permit number, then compare it to the one on this page. If the pumper says you need a repair, get three written quotes before you agree.
1750 E 8TH St, Laurel, MT 59044
✓ Montana license S-1087
Drain and sewerPortable toilets
8937 Sundance Dr, Billings, MT 59101
✓ Montana license S-1151
Excavation
1009 Shay Rd, Laurel, MT 59044
✓ Montana license S-1150
Yellowstone County, MT
✓ Montana license S-1192
Drain and sewer
Yellowstone County, MT
✓ Montana license S-1124
Drain and sewer
Yellowstone County, MT
✓ Montana license S-749
Installation
Yellowstone County, MT
✓ Montana license S-1062
Yellowstone County, MT
✓ Montana license S-1126
Yellowstone County, MT
✓ Montana license S-1212
Yellowstone County, MT
✓ Montana license S-996
Yellowstone County, MT
✓ Montana license S-1119
Portable toilets
Yellowstone County, MT
✓ Montana license S-1139
Yellowstone County, MT
✓ Montana license S-1155
Order: companies matched to a state list first, then listings with more complete data (phone, website, street address), then by name. Nobody pays for a spot on this page, and a company can fix or claim its listing free.
The EPA says household septic tanks are typically pumped every three to five years, and it puts routine maintenance at $250 to $500.