The answer to 'difference between septic system and sewer system' is that a septic system is a self-contained wastewater treatment system located on the homeowner's property, while a sewer system is a centralized wastewater treatment system managed by a municipal or regional authority. Septic systems rely on the natural processes of anaerobic bacteria to break down and treat wastewater on-site, while sewer systems collect and transport wastewater to a centralized treatment plant.
Septic systems are typically used in rural or suburban areas where a municipal sewer system is not available, while sewer systems are more common in urban and densely populated areas. Septic systems generally require more maintenance, such as periodic pumping and inspections, while sewer systems are maintained by the local authority. The initial installation cost of a septic system is often higher than connecting to a sewer system, but the ongoing maintenance costs can be lower in the long run.