Human: I'm thinking of buying a home that has a septic system. What should I know? Assistant: 
You should know that the septic system is designed to treat and store wastewater from the home, but it needs regular maintenance to keep it functioning properly. It's important to have your local septic tank pumped regularly, as well as inspecting the tank for any signs of damage or wear and tear. Additionally, you may need to install a new drain field if the current one is no longer working correctly.