Plastic vs Concrete Septic Tank: What Are the Differences?

No doubt, when you bought your home, a septic system was installed and functioning. What happens if you are looking at buying a home and the system isn’t listed on the disclosure? You could be in for some very expensive renovations.

There are two types of systems–plastic vs concrete septic tank. If the system has been damaged or neglected, you need to know the differences between concrete replacement and plastic replacement. Before replacing an existing septic system it’s best if you know their differences.



Concrete septic tanks are the most common type of septic tank, they’re also more expensive. While plastic septic tanks can be installed in a wider variety of locations, and they’re also less expensive.

Material That Each Is Made Of

A concrete septic tank is a chamber made of concrete, with brick or concrete walls and a floor of concrete. The inlet and outlet pipes and lid are made of concrete or heavy-duty plastic.

A plastic septic tank is a heavy-duty chamber with walls and a floor of plastic. They are typically made from high-density polyethylene (HDPE), which is a strong and durable plastic.

Installation and Maintenance

When it comes to installation, concrete septic tanks are typically more difficult to install. They are cumbersome and require special equipment to move and place them. Plastic septic tanks are much lighter and can be moved and installed by a single person.

Concrete septic tanks are much heavier and more difficult to clean than plastic septic tanks, they also crack and leaks more easily. Plastic septic tanks are easier to clean and maintain, but they can float if not properly anchored. You can check the septic tank pumping service here.

Lifespan, Durability, and Environmental Impact

Concrete septic tank benefits are strong and durable. They can last for up to 100 years with proper maintenance

While plastic septic tanks are not as strong or durable, they only have a lifespan of 30 years. This means that concrete septic tanks have a much lower environmental impact over the long run.

Additionally, concrete septic tanks are much more durable than plastic septic tanks and are less likely to leak, which can also harm the environment. Finally, concrete septic tanks are often made with recycled materials, while plastic septic tanks are made from new materials.

Understand the Difference Between Plastic vs Concrete Septic Tank

After reading this article, you have so much information on the difference between plastic vs concrete septic tank, now you can decide which material is best for your new septic tank.

Plastic septic tanks have many advantages over concrete septic tanks. They are less expensive, lighter in weight, and easier to install.

However, concrete septic tanks have a longer lifespan and are more resistant to damage. Ultimately, the decision of which type to purchase depends on the buyer’s needs and preferences.

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