DEPEND ON US FOR SEPTIC SYSTEM SERVICE IN FORISTELL, MO Maintaining a clean, healthy home takes some work. One of the most important parts of your home is your septic system. Luckily, A&M Septic and Excavating, LLC provides residential septic system service in Foristell, MO. We offer efficient septic system installations, repairs, pumping and maintenance. Maybe you need a residential or commercial sewer system installation. We can do that, too. We even complete grading and excavation jobs.