How to Choose the Right Septic Tank Material Septic tanks, which are typically located underground, collect sewage and treat it through bacterial decomposition. A good septic tank is essential for a better septic system, and its construction material is important. Septic tanks are constructed of many materials, including reinforced concrete, fiberglass, or metal. The tank may contain up to three compartments. Most important is that the septic tank must be watertight to prevent leakage of untreated sewage that might pollute groundwater and to prevent leakage of groundwater into the tank that could overload the absorption field. To choose a good septic tank, one must understand the various types of septic tank materials, their benefits, and their drawbacks, which are briefly explained below. 1) Concrete 2) Plastic 3) Fiberglass 4) Steel Flush Fellas Septic and Excavating https://www.theflushfellas.com/ https://local.google.com/place?id=16051516111891436827&use=posts&lpsid=CIHM0ogKEICAgICRut6A3AE