What size septic tank do I need?
When it comes to wastewater in your home, you want to ensure that you have the best and most appropriate setup for your needs… otherwise, things can get very messy (and smelly).
But how do you know what size septic tank you need? We know this can be a tricky question, which is why we have collated the information you need to help make a decision. If you need some extra assistance, give Express Wastewater a call at 1300 722 517 and we can discuss all your septic tank needs.
What is a septic tank?
A septic tank is a buried watertight container that can be constructed from concrete, fibreglass or polyethylene plastic. Its prime responsibility is to collect and store all the wastewater from the plumbing in your home before dispensing it through a drain field.
How does a septic tank work?
A septic tank stores wastewater, which aims at separating water from the oils, grease and organic material that are put down the drain in your home. The organic material will usually sit at the bottom of the tank and turn into sludge while the oils and grease, known as scum, will float to the top.
What factors affect septic tank size?
There are a few factors that affect the size of the septic tank you will require, including:
- The size of your home.
- The size of your property.
- The number of people in your home.
- The levels of wastewater you and your family produce.
- What kind of system is needed (e.g. all wastewater/greywater etc)
What size septic tank do I need?
What size septic tank you require is a tricky question to answer, as everyone is different. As a rough guide, in accordance with AS/NZS 1546.1:2008, a house with 4-6 bedrooms must have a tank that is a minimum of 4,500L in size if they produce ‘regular’ levels of wastewater. This draws a lot of assumptions though - it is best just to speak to your local wastewater specialists for assistance!
Here's an infographic summarising all the information listed above.
Who do I speak to about septic tanks?
It is always recommended that you speak to an industry professional when it comes to septic tanks and your needs. Each household has different requirements, therefore it is important to review all factors before making a decision and professionals are qualified in the areas. Give Express Wastewater a call on 1300 722 517 and we can discuss your septic tank needs today.
Resources:
Government of Western Australia (Understanding Septic Tank Systems): https://www.healthywa.wa.gov.au/Articles/U_Z/Understanding-Septic-Tank-Systems Australian Government (The septic tank): https://www1.health.gov.au/internet/publications/publishing.nsf/Content/ohp-enhealth-manual-atsi-cnt-l~ohp-enhealth-manual-atsi-cnt-l-ch2~ohp-enhealth-manual-atsi-cnt-l-ch2.9 NSW Government (The easy septic guide): https://www.olg.nsw.gov.au/sites/default/files/Easy-septic-guide.pdf