We offer a wide range of septic tanks

If you need a new septic tank, or your existing one needs an upgrade, be sure to call Darwin Fibreglass Pools and Spas. Our Darwin septic tank professionals supply the following options promptly and at competitive rates.

Size Weight Dimension Height
3000L 115kgs 2m 2m
4000L 135kgs 2m 2m
Septic Tanks Darwin

While a septic tank may not be the most glamorous choice for your home, making sure you have the best available can make a big difference to how your home works for you in the long term.


People who live on mains supply may take good sewage treatment for granted, but for those of us who rely on a septic tank day to day, it makes an enormous difference to the functioning of your home.


Let’s take a look at how septic tanks work, and the differences between a good and a bad installation.

Septic tank installation

Septic tank installation is a delicate and messy process, and if it’s not done right, it can create a number of problems down the line that can cost money and create an unpleasant mess! That’s why it’s important that you have installers who know what they are doing.

Septic tank installation requires a number of skills including excavation and site management, plumbing, electrical wiring and water management, which many contractors don’t possess.

The first problem is surveying the site and making sure you know where the tank is supposed to be, which can be a serious concern because of potential groundwater contamination.

The next is conducting the excavation carefully and properly, making sure the tank is secure and on solid ground, then the whole system has to be properly set up including connecting the septic system to existing pipes.

We advise that this is done by an expert. If you need your septic system installed, give us a call on (08) 8947-1192  today. We have a team of experienced septic system installation experts!

Installing a septic tank on your property incorrectly can lead to a messy and expensive disaster, which is why you need to work with a team of experts to install a waste disposal system that works for you.

At Darwin Fibreglass Pools & Spas, we specialise in the installation of septic tanks in properties all over Darwin, so you can rely on us to provide you with a professional and efficient installation service. Every member of our experienced team is committed to meeting our exceptionally high standards of quality, so if you have any questions about our services, please don’t hesitate to ask.

What does the installation process involve?

  • First, the area of installation must be fully inspected and evaluated for suitability. The surrounding environment will be assessed to ensure it complies with government regulations.
  • The tank itself must be fully inspected to ensure that it has not sustained any damage after being transported to the site.
  • A hole must then be excavated to ensure that the tank and any backfill can fit inside, then the base should be installed for the tank to sit on.
  • The tank is then lowered into the hole using a specialised lifting system.
  • Backfill is then added, along with the inlet and outlet.
  • The septic drainage field, cover and frame are then added.
  • Any ventilation requirements are carried out.

Septic tank upgrade options

If your septic tank is not large enough to suit your requirements or your needs have changed, we can install septic tanks in two different sizes: 3000L (115kg) and 4000L (135kg). If you aren’t sure which size is the right option for you, please contact our experts and we will be happy to help. Our septic tanks are available at competitive rates, so please get in touch with us to request a free quote for your upgrade.

When would a septic tank be a good option for your property?

Whether you’ve just moved to a new property or you’ve owned your current home for years, there may come a time where you are considering a new waste disposal system. If your property isn’t connected to a mains sewer, installing a fibreglass septic tank could be the solution.

Septic tanks are commonly used in the following areas:

  • Properties with poor drainage
  • Properties in rural locations
  • Areas without local sewage treatment plants

Benefits of a septic tank

Septic tanks have many practical and environmental benefits, including:

They’re eco-friendly

Septic tanks are far less susceptible to leakage than sewage systems, so there is a lower risk of damage to the surrounding environment. Lower energy costs and the lack of large infrastructure required means that septic tanks are more energy-efficient and take up less space in rural or smaller communities.

They give you more control

By installing a septic tank on your property, you won’t have to rely on an external company to fix any technical issues you might encounter, and you can arrange for your system to be fixed at your convenience.

They’re durable

One of the leading benefits of septic tanks is that they are built to last for many years. Most septic tanks are designed to offer between 20 and 40 years of use, so for most property owners, this should cover the amount of time spent living in the property.

They’re cost-effective

Extensive sewer lines can be very expensive to construct and maintain in both rural and urban areas, but septic tanks are much cheaper to install and don’t come with the same large monthly maintenance costs.

They can reduce your water bills

Most people are careful with what they put down their drains, but installing a septic tank can help you become more aware of your regular water use and can help you develop more efficient water habits. This is not only kinder to the environment, but it can also reduce your household bills.

How does a septic system work?

A properly fitted septic tank needs minimal maintenance and is a self-sufficient way of treating your own water. The wastewater flows into the tank where the solids sink to the bottom to be digested naturally by bacteria, while other compounds known as scum floats to the surface.

The middle layer of relatively clean water can then be pumped away in pipes to be released into the groundwater, where it naturally filters into the soil free of anything unpleasant to get into the groundwater.

Clearly, there is the potential for a lot of unpleasantness if the system doesn’t work properly, which can even get you into legal trouble if your tank pollutes the groundwater with sewage.

Benefits of a septic tank

The key benefit of a septic tank is that it allows you to have proper sewerage and drainage while living off the main sewer grid, which means you can site your house wherever you want it to be without having to worry that you won’t be able to use normal plumbing!

It’s also eco-friendly and efficient, disposing of your waste with minimal water loss and without having to use any nasty chemicals. It’s also a very low maintenance solution that has a long-life expectancy, so your value for money is high.

Get in touch

We’re experts in supplying the finest fibreglass septic tanks in Darwin, so if you need help selecting and sizing your tank or need a tank supplied or fitted, we’re the company for the job.


With many years of experience and all the technical know-how, we’re the one-stop-shop for your septic tank needs.


Contact us online or give us a call on 08 8947 1192 today to speak to an expert!