Cotter’s Sewer, Septic and Portable Toilet Services is a family owned and operated company based out of Laurel, Montana that provides services to Yellowstone County, Stillwater County and Carbon County. We offer services to maintain your home’s sewer system or septic tank and we rent portable toilets. We try out best to provide same day service because we understand how urgent it is to get your home back to normal once you’ve experienced problems with your sewer or septic tank. Cotter’s has a technician on call 24/7 if you need service outside of normal business hours. Please click on the appropriate link above to explore each area for more detailed information. We look forward to assisting you with the utmost knowledge and customer service to ensure your home’s system is working to its fullest potential.