What is a fiberglass septic tank?

This is a tank molded out of glass fibers.  There are several advantages to using this type of tank.

A traditional concrete tank may sometimes crack or a steel tank can rust while a homemade tank may collapse.  Fiberglass tanks do not have these types of problems.


  • Easier to install because the y are lighter in weight and can be transported with out heavy equipment.
  • They last longer by holding up to gases created by sewage and don’t deteriorate like traditional tanks.
  • Tree roots cannot penetrate fiberglass tanks like concrete tanks.
  • If ever damaged they can be repaired more easily.
  • Easier to plumb with precisely cut holes and connects for PVC pipes.


  • More Costly
  • May “float” out of the ground because they are lighter weight than concrete.