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Concrete septic tank vs Plastic septic tank: Pros and cons to help you choose the best fit for you!

Choosing the best material for your septic tank system can be confusing, which is why we have listed pros and cons of having a concrete septic tank vs. plastic septic tank. We all know the importance of a functioning plumbing system, so as a responsible homeowner, it’s crucial for you to choose the best material that fits your needs.

Sadly, no septic tank will last forever, it doesn’t matter if you chose a concrete septic tank or a plastic septic tank, you will eventually still need to replace it with a new one over time. Deciding which septic tank is best for your property isn’t a decision you should take lightly, which is why we have listed pros and cons between concrete septic tanks vs. plastic septic tanks.


Pros and cons of plastic septic tanks


Plastic septic tanks are a great alternative to concrete septic tanks, mainly because they are already premade so the installation process will be done much faster and easier. The first advantage that plastic septic tanks have over concrete septic tanks are that they are cheaper, so if you are on a budget, a plastic septic tank is a great option for you!

Secondly, plastic septic tanks are much lighter than concrete septic tanks, meaning that they are easier to transport and as mentioned previously, they are easier to install. In fact, installation can be as simple as digging a hole, placing the tank and linking it to your plumbing system. This is something that comes in handy because you will be able to install them in a variety of locations.

Lastly, plastic septic tanks are more flexible than concrete septic tanks, meaning that they are more resistant to water based corrosions and they won’t crack as often as concrete septic tanks.


The first and most obvious disadvantage of plastic septic tanks are that they aren’t as sturdy as concrete septic tanks. In fact, they may be crushed beneath the weight of soil and may even break after vehicles drive over the areas where they were buried.

Plastic septic tanks aren’t as strong as concrete septic tanks therefore they are also more susceptible to environmental damage. Because of their fragility, plastic septic tanks require more maintenance than concrete septic tanks resulting in lower lifespan.


Pros and cons of concrete septic tanks


The main advantage that concrete septic tanks hold over plastic septic tanks is that they have a much longer lifespan. If cared for properly, concrete septic tanks can last up to 40 years.

Another major advantage of concrete septic tanks are that they are less likely to be affected by environment changes such as soil conditions or tree roots. Lastly, concrete septic tanks are more resilient so they don’t require as much maintenance as plastic septic tanks.


The main disadvantage of concrete septic tanks are that they are more expensive than plastic septic tanks, plus they are harder to install and they can eventually crack as they get old. However, you will need a concrete septic tank repair only if they aren’t maintained properly.


Concrete septic tank vs plastic, which to choose?

 At the end of the day, both septic tanks have their advantages so your decision should be based on which septic tank fits best your property needs. Concrete septic tanks are more durable but more expensive, while plastic tanks are cheaper but more susceptible to damage. As always, it’s important to seek for the advice of experts to help you decide with septic tank is best for you

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