<human>: I'm thinking of buying a home that has a septic system. What should I know?
<bot>: 
1. First, it is important to understand the different types of septic systems and how they work.
2. Secondly, you should research local regulations regarding septic systems.
3. Thirdly, you may want to hire an experienced professional to inspect your potential property before purchase.
4. Finally, make sure to ask for references from any contractors or plumbers who have worked on septic systems in the past.