Septic Tanks Darwin

Call 0407 692 980

If you live in a rural part of Darwin and its surrounds, it's most likely you're not connected to a central sewer. If that's the case, a quality septic tank installation from Absolute Plumbing Australia is the way to go.

Septic Tank With Ventilation

Experienced, Fully Licensed Installers

We carry over 20 years of experience in the industry, so you can trust our team to perform a quality septic installation that meets regulations and guarantees longevity. We can work with you to identify the best septic tank for your property and requirements.

Installing Septic Tanks

Septic Installation Process

The first step of our installation process is assessing your particular location, the size of your land, the layout, the surrounding area, and the distance of your property from the waterways. Using our expert assessment, we'll suggest a solution guaranteed to deliver results, bear a low impact on the environment, and comply with all government requirements.


We'll also spend time discussing the costs involved to ensure we're meeting your budget. The cost of installation is impacted by the size of your tank, the type you've chosen, and the location. We're happy to discuss your options to make sure you're happy with the final choice.


We'll then install your septic tank using our expert techniques and tool. 

Septic Tank Maintenance

At Absolute Plumbing Australia, we install tanks of superior quality, designed to withstand ground movement. This means they're unlikely to crack or to cause pollution of groundwater. While we install tanks of outstanding durability, maintenance is important. Your tank must be kept in good condition to prevent a malfunction. Contact us today if you notice any of the following signs of septic tank failure:

  • Bad smells around the tank and drain field
  • Wastewater collecting in your drain
  • Pooling water or mud around your tank or in your basement
  • Bright green, spongy grass on your drain field, especially during dry weather

Benefits Of Maintenance

Maintaining your septic tank with Absolute Plumbing Australia carries great benefits.

  • Savings: Our cost-effective maintenance services are cheaper than replacements or repairs.
  • Protection: Maintaining your system will also maintain the value of your property, and can prevent any costly liability or legal fees.
  • Environmental sustainability: A malfunctioning system releases bacteria, viruses and chemicals that can harm local waterways and ecosystems - so maintenance also protects native flora and fauna of the area.
  • Health: When your system's properly maintained and working well, it prevents groundwater from becoming contaminated and harming you, your neighbours or your animals.

Our Maintenance Services

As part of our septic tank maintenance Darwin and surrounds, our Absolute Plumbing Australia team can:

  • Pump out your tank to prevent sludge build-up
  • Pump out your grease trap
  • Clean out your grey water pump
  • Check and clean your filters
  • Assess the outside of your tank to make sure it's not damaged

Choose Absolute Plumbing Australia For Septic Care

When you need a new septic tank on your Darwin property or want to maintain your current system, Absolute Plumbing Australia is here to help. We're a locally-owned and operated business with 24/7 availability for all emergency plumbing needs - so if there's a major problem going on with your septic, you know who to call. We're on hand to assess your property, advise of the right septic for your home, and arrange a professional installation according to requirements and standards. We can also assist with reliable, regular maintenance to prevent major septic issues. 


Don't hesitate to get in touch with us to learn more about our septic tank services. Call Absolute Plumbing Australia on 0407 692 980.

Septic Tank FAQs

  • How do I know what size septic tank I need?

    There are a few factors that determine how big your septic tank needs to be. The first thing to consider is how many people currently live at the property, as well as how many people could live there in the future. As a general rule of thumb, a home with up to three bedrooms needs a septic tank that's adequate for five people, while a home with six bedrooms should have a tank that can accommodate eight people. These rules apply to single properties, so if a septic tank will be serving multiple homes, these should be sized separately and then added together. This information can be used to roughly work out how much wastewater each home generates.


    Aside from this rough guide, Standards Australia also requires that any home with four to six bedrooms needs to have a septic tank of at least 4,500L. This gives you some idea of how big a septic tank you will need if you produce ordinary amounts of wastewater. If, for any reason, you produce more than average, you will need a bigger tank.


    Of course, these are just general guidelines. To get a more accurate idea of the exact size of the tank you will need, make sure to get in touch with a professional like Absolute Plumbing Australia. We can help by making sure you get the right size tank for your property.

  • How to self-maintain your septic system?

    One of the key steps to maintaining your septic system is to get it regularly pumped out. If this doesn’t happen, sludge and scum can easily build up and cause problems with your system's operations. You can also avoid this by stopping fat or grease from entering your drains and getting into the system – septic tanks are not designed to break down this kind of debris.


    As with any system, the more it is used, the quicker it will begin to degrade. So, if you want to elongate the life of your septic tank, try to minimise the amount of water that is put into it each day. As well as this, try to avoid any traffic over the top of the system, including cars, people and even animals if possible. It can also help to switch drains or soak wells so that the soil can better absorb any effluent.

  • How often do septic tanks have to be pumped out?

    Generally, you will need to get your septic tank emptied at least once every three years. This is a rule that applies to any household where up to five people live. If more than five people live in one property, then there will be more wastewater entering into the system and therefore you will need to get your tank cleaned more often.

  • What are the warning signs of septic system failure?

    One of the most common and easy-to-spot signs of a problem with your septic tank is a very bad smell coming from the area where it is located. You may also notice weeds and grass growing a lot more rapidly in the area or a soggy surface where the tank is located.


    From within your home, you could start to experience backups. This includes toilets or sinks not draining as well as they used to, which can quickly become a problem. For this reason, if you spot any of these issues, it is imperative that you get your septic tank checked straight away. It could also benefit you to get your septic tank checked regularly to avoid facing this sort of damage and carry out any repairs before they escalate.