<human>: What are the advantages of a septic system over a sewer system?
<bot>: The primary advantage of a septic tank system over a sewer system is that it requires significantly less maintenance and upkeep. Septic systems use bacteria to break down waste, which produces fewer harmful byproducts than traditional sewer systems. Additionally, septic tanks can be located closer to homes, making them easier to access for maintenance. Finally, septic tanks are typically more affordable than sewer systems.