Advantages Of Concrete Septic Tanks Over Plastic


Concrete septic tanks in QLD are a vital component of every home and business—especially rural properties that are not connected to a sewage system.

Considering septic tanks operate as a chamber that allows the flow of wastewater for basic treatment, it’s important to have a system that’s highly durable and long-lasting. In this blog, we’ll talk about the differences between concrete and plastic septic tanks and tell you exactly why concrete is better.

What is the difference between concrete and plastic septic tanks?


The main different between a concrete and plastic septic tank is, yep, you guessed it—material. And although plastic septic tanks are popular and have their importance, we believe concrete is the better choice for our clients.

For starters, plastic septic tanks are lightweight and resistant to corrosion. However, because they’re lightweight, plastic septic tanks are more likely to be damaged during the installation as opposed to concrete. First point to concrete.

Secondly, concrete septic tanks have higher effluent levels than plastic tanks. Not only that, plastic septic tanks, if not installed correctly, have been known to ‘float’ to the ground’s surface. Concrete septic tanks on the other hand, because of their weightiness, will not float to the surface. Second point to concrete.

Why are concrete septic tanks better?


Now that we’ve compared some of the key differences between concrete and plastic septic tanks, let’s look at the key benefits of choosing concrete for your home. At Graham’s Precast Concrete Products, we choose concrete, not just because it’s part of our wheelhouse—we also believe it’s the best material to use.

The advantages of choosing a concrete septic tank includes:

  • Highly durable
  • Rustproof
  • Does not ‘float’ to ground’s surface
  • Far less likely to incur damage during installation
  • Has no impact on groundwater quality
Each septic tank that Graham’s Precast Concrete Products supplies is constructed in accordance with Australian and NZ industry standards (1546.1.2 2008 Part 1).

When it comes to wastewater treatment, you need a septic system that’s dependable and reliable. And for that, we recommend the study, versatile material that is concrete. The ultimate wastewater treatment solution.   

Septic tanks are an important asset, which is why it’s vital you invest in the right material. Looking for a concrete septic tank in QLD?

Get in touch with Graham’s Precast Concrete Products by phone or online enquiry form today for a free, no-obligation quote.

For more information on septic tanks and other precast concrete products, read our blog on the Advantages of Precast Concrete.