Buried Beneath the ground your septic system constantly working. When you’re at work, when you’re eating dinner, when you’re sleeping. Wherever you are and whatever you’re doing your septic system is always working. The septic system may be the most overlooked and undervalued utility in your home. If you are like most homeowners, you probably never give much thought to what happens when waste goes down your drain. But with proper operation and maintenance of your septic system can continue to work for you for at least 25 to 30 years.