Advantages
• It is made out of polyethylene. These tanks are heavy-duty and are built to last.
• It has low initial cost.
• It requires no skilled labour, it is quick and easy to install.
• It requires no maintenance.
• Its unique shape is designed to withstand soil pressure.
• It has a double chamber that ensures only clean water enters the soak-away pit.
• Unlike a concrete tank, it does not allow seepage of water through cracks.
• Can be developed for communities as well as individual domestic use.