Your septic tank is usually made up of two ‘chambers’ and buried underground. They can be brick built, or made from fiberglass or plastic. The ‘tank’ holds the sewage – the solids either fall to the bottom or float to the top and the liquid drains through a pipe into a drainage field or soakaway. This drainage is really important as it removes any remaining pollutants before the liquid reaches groundwater.
Septic tanks generally need emptying every 12 months.