Cotters has gained a 28 year reputation as the "cleanliness leader" in south central Montana. We are a local, family-owned company that cares about what our customers want. We work with you to provide top quality products and services tailored to your specific needs, so you dont have to make any compromises or sacrifices. Dont settle for anything less than state-of-the-art sewer and septic solutions, or portable toilet rentals, from Cotters. Well stake our 28-year reputation on your ultimate satisfaction. Cotters Sewer Septic and Portable Toilet Services provides server, septic services, portable toilets and more. Give us a call today if you have any questions.