The answer to 'how does septic tank work' is that a septic tank is an underground wastewater treatment system used in areas without access to a municipal sewer system. It consists of a large concrete or plastic tank that collects and treats household wastewater before it is dispersed into a drain field. The septic tank separates the solid waste from the liquid waste, allowing the solids to settle to the bottom where they are broken down by bacteria over time. The liquid waste, or effluent, then flows out of the tank and into the drain field, where it is further filtered and absorbed into the soil.
The septic tank requires regular maintenance, such as having the solid waste pumped out every 3-5 years, to ensure it continues to function properly. Proper care and maintenance of a septic system can help extend its lifespan and prevent costly repairs or replacements.