Business Directory Go back to directory. No Photo Available American Septic Wrx American Septic Wrx Contact: Doug Leidholt, Owner & Operator Work Phone: (406) 951-3755work BiographyNot on a public sewer system? Your septic system is one of the most important features of your home. Call me before the “campaign promises” overflow. Doug Leidholt, Owner & Operator Doug is a life-long resident of Miles City, and is the owner of Progressive Cleaning Services, Inc and American Septic Wrx, licensed and registered with the Montana Secretary of State.