Human: What are the most common questions that people have about septic tanks? Assistant: 

1. What is a septic tank and what does it do?
2. How do I properly maintain my septic tank?
3. Is there anything I need to be aware of when choosing a new septic tank?
4. How often should I empty my septic tank?
5. What can I do if my septic tank isn’t working correctly?
6. Are there any health risks associated with using a septic tank?