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How Does A Septic Tank Work?

Where septic tanks are located?

A septic tank is a buried water tight container that is typically made from concrete, fibreglass or polyethylene plastic. It is responsible for collecting and storing all of the wastewater from your household plumbing prior to distributing it through a drain field.

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Why do you need to collect wastewater in a septic tank?

Wastewater is stored in a septic tank so that the organic material as well as oils and grease can be separated from the water. The organic material will typically reside at the bottom of the tank and turn into sludge whilst the scum (oils and grease) will float to the top of the water.

Septic Tank Explanation

Septic tank maintenance

Septic tanks are often overlooked when it comes to maintenance with owners leaving the tank alone for long periods of time. You need to ensure that you have your tank pumped out at least once a year to avoid the risk of a failing septic system.

What is a failing septic system?

A failing septic systems is when the sludge and scum build up to a point where it makes its way up both the inlet pipe and outlet pipe of your tank. This blockage will then cause your home to be backed up and dramatically increase the risk of flooding.

Benefits of a septic tank system

Septic tank systems have been used in rural areas for decades but more recently are becoming popular in residential applications. A lot more people are now looking into septic tank systems for their new homes to help cut down their water usage.

Talk to a septic tank expert

If you would like more information on septic tanks or would like to have a septic tank system installed then talk to our team today on 1300 722 517 or alternatively you can fill in our online quote form and one of our friendly staff will be able to assist you with your query.


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For more in depth septic systems information visit our Septic systems Information page

Why Use Express Wastewater Solutions?


    Because we are not a manufacturer and not tied to one particular system we can always offer the best solution for your wastewater needs.


    Because we do this every day we have developed a close knit expert team for every step of the process – from plans and council paperwork to excavations, electrical and plumbing. We handle it all to make the whole process as stress free and quick as possible.


    Most people have never installed a home sewerage treatment plant and don’t know the next step, that is why we offer a free 30 minute phone consult with one of our experts to point you in the right direction.


    We handle your wastewater installation from start to finish we can deal with all the trades, council everything so you don’t have to worry about a thing.


    Have peace of mind knowing that Express are licensed, insured professionals that will do your job right the first time.


    Not sure what system is right for you, or want to know if your system is working properly? Just give one of our friendly wastewater experts a call and they will be more than happy to help.


    We will always look to repair your system rather than replace it if it does not need to be, which will generally save large amounts of money sometimes up to and over $10,000.