DEALING WITH SEWAGE BACKUPS? You may need professional septic services in Laurel, MT Repairing and maintaining septic tanks and sewer line is a dirty job, but somebody has to do it. When you need sewer or septic services in Laurel, Montana, you can count on Cotter's Sewer inc. All you have to do is tell us about your current issue, and we'll take care of the rest. We can even provide portable toilets so that you can still live comfortably while your service is completed. You'll get efficient and reliable service, no matter what.