A maintained septic system has less risk of failure. Septic system failure is not only costly, but also bad for the environment since bacteria from leaky septic systems can contaminate creeks, streams and the Swannanoa River.
Do you know how to care for your septic system? NCSU has several helpful publications for you to learn about and maintain your system.
Why Do Septic Systems Fail? | NC State Extension Publications (ncsu.edu)