Environmental challenges, market conditions, and regulations all play a role in the evolution of tank design. While the basic function of a septic tank as a storage vessel has not changed, much surrounding the topic has, including usage, production materials, and rules and regulations surrounding tank applications.
Installers face site and regulatory challenges that dictate tank selection including the need to design compact systems for small lots or systems in environmentally sensitive areas. Advanced wastewater treatment for limited or sensitive sites and rainwater harvesting for potable and non-potable water are two major areas demanding a new approach to tank construction and use. The need for large tanks that can be easily transported to often remote sites is another catalyst spurring the move to lightweight and durable plastic tanks.