Septic tanks are like old technology. You will see septic tanks built from many years ago. That is all dependent on what the tank is made from. Some older generation buildings, they have got brick tanks and those tanks will start to degrade over time. If you were to pump them out, you will just see that the surface walls of the tank starting to wear over time. More recently, we are looking at plastic tanks but still can get some concrete tanks.
Lifetimes on these tanks could range based on the quality of the plastic like reinforced plastic or HDP, which we use. It could be anything from 15 to 25 years, and then service life could go beyond that. There is not reason why it can’t go beyond if it is installed as per the manufacturer’s installation instructions. However, there are some limiting factors, especially in the UK in terms of ground conditions. You might need to ask the manufacturer’s advice if you have got challenging circumstances you need to overcome. The surface like can be anything from up to 25 years on a plastic tank.
