03/08/2026
π§ Septic System vs Wastewater Treatment Plant β Which One Does Your Property Need?
How do you know when it is time to replace your current system?
If your property isn't connected to town sewer, you may be wondering whether you can install a traditional septic system or if you need a wastewater treatment plant.
The right solution depends on your property, site conditions, soil type, environmental considerations and current approval requirements.
π€ Septic System
A traditional septic system works by allowing solids to settle in a tank, with wastewater then dispersing through an approved absorption area.
A septic system may be suitable when:
βοΈ You have enough suitable land for an absorption area
βοΈ Soil conditions allow effective wastewater dispersal
βοΈ The property meets current approval requirements
βοΈ A traditional, lower-maintenance system is appropriate for the site
π’ Wastewater Treatment Plant
A wastewater treatment plant provides a higher level of wastewater treatment by using biological processes before treated water is dispersed through an approved system.
A treatment plant may be the better option when:
βοΈ Your block has limited space
βοΈ Soil conditions are not suitable for a traditional septic system
βοΈ The property has environmental constraints
βοΈ A higher level of wastewater treatment is required
π¨ Is your existing septic system ready for replacement?
Not every septic issue means you immediately need a new system. If you are unsure when your septic tank was last serviced, having it pumped out is a good place to start. Septic tanks should generally be pumped out approximately every 5 years to remove built-up solids and help maintain performance.
However, if your system continues to have issues after servicing, it may be a sign that it is ageing, no longer suitable for your property, or unable to meet the needs of your household.
Signs your septic system may need upgrading include:
βοΈ Persistent odours around the tank or disposal area
βοΈ Wet or soggy ground where wastewater is dispersing
βοΈ Slow-draining fixtures or plumbing issues
βοΈ Sewage backing up into your home
βοΈ An older system that is struggling with increased household usage
βοΈ Renovations, extensions or additional bedrooms increasing wastewater demand
Many older septic systems were installed decades ago and may not meet the needs of modern homes or current site requirements.
At Plumbing & Gas Services Pomona, we can assess your existing system, discuss your options and install a compliant wastewater solution suited to your property β whether that means replacing an old septic system or upgrading to a modern wastewater treatment plant.
Serving Pomona, Noosa Hinterland, Noosa, Cooroy and surrounding areas.
π§ Building, renovating or dealing with an ageing septic system? Contact our team before your system fails.
π Give us a call on 0404 657 047 to discuss your options.
π Plumbing & Gas Services Pomona
π» https://plumbingandgasservicespomona.com.au/septic-systems/
QBCC Licence No: 15247354