Your Hometown Septic System Expert

Welcome to the Selsor's Underground website. We hope you find this site informative, helpful, and interesting. Since 1956, Selsor's has been serving the septic needs of customers in DuPage, Cook, Will, Lake, McHenry, DeKalb, and Kane counties in northern Illinois. We are Bonded and Insured and licensed by the EPA and the Illinois State Health Department. Use the menu at the left to learn about your septic system and Selsor's services designed to make it work for you.