If you are installing a new septic system or replacing your septic tank, you have the choice of either a concrete septic tank or a plastic septic tank. Each has advantages and disadvantages. Your sewer septic contractor can help you decide which is the best tank for your septic system.
Concrete septic tanks have been in use for decades and are still the standard in the industry. They are heavy which means a much lower likelihood of floating up out of the ground when empty, it also makes the tank more cumbersome to install. The site must be accessible to a crane to lift the tank into place.
Concrete septic tanks are also very durable, but they are more expensive than plastic tanks. In addition, they can crack in certain conditions are more susceptible to leaks than plastic tanks. One advantage that could be very important is that concrete tanks are approved for use in every state.
One of the primary advantages of plastic tanks is their lower weight makes it much easier to move them into position for installation. This can be crucial if access to the work site is limited. However, their lighter weight makes them more likely to “float” or pop up out of the ground when they are empty if groundwater levels are high.
Preventing plastic tanks from floating and preventing damage during installation requires careful installation techniques that can increase the cost of the system. Once they are properly installed, a plastic tank is very durable and resistant to cracking.
Another plus is that plastic tanks cost less than a comparably sized concrete tank. However, plastic septic tanks are not approved for use in all states so check your local laws before spending your money on a plastic septic tank.
