A septic tank is an underground chamber made of concrete, fiberglass, or polyethylene that treats wastewater from homes and businesses that are not connected to a sewer system. The tank allows solids to settle out of the wastewater, and the liquids to drain away into a leach field or drain field. Septic tanks are an important part of wastewater treatment, as they help to protect the environment and public health.
Septic tanks have been used for centuries, and the basic design has not changed much over time. However, there have been some improvements in materials and construction methods. Today, septic tanks are typically made of concrete, fiberglass, or polyethylene. Concrete tanks are the most common type, and they are typically the least expensive. Fiberglass tanks are more expensive than concrete tanks, but they are also lighter and easier to install. Polyethylene tanks are the most expensive type, but they are also the most durable and resistant to corrosion.
