Human: What are the benefits of using a septic system as opposed to a sewage system? Assistant: 
The primary benefit of using a septic tank is that it is a more cost-effective option than installing a sewage system. A septic tank uses natural processes to break down waste, which reduces the need for expensive infrastructure and treatment facilities. Additionally, septic tanks are generally easier to maintain than sewer systems, as they require less frequent cleaning and pumping. Finally, septic tanks can provide an additional source of water for landscape irrigation.