Septic Tanks

Duraplas Heavy-Duty Poly Septic Tanks

✓ Extremely Strong  ✓  Unbeatable Value  ✓ 600 – 5,000 Litres

Are you looking the ideal septic or wastewater tank? We carefully designed and engineered our range of poly septic tanks to tick all the right boxes and stand head and shoulders above the competition:

  • Extremely strong and yet very flexible and won’t crack or leak like concrete
  • Our septic tanks are certified to meet strict Australian standards for your peace-of-mind AS/NZS 1546.1:2008 (on-site domestic wastewater) (cert #717633)
  • Simple to install with no heavy lifting equipment required – you just need a small excavator, or some straps and a few able-bodied people can easily lower the tank into a hole
  • A range of capacity options: Select from capacities of 600 Litre, 1,200 Litres, 3,000 Litres and 5,000 Litres to meet your requirements
  • We are a family owned company operated by the same family since 1984 giving you peace of mind and quality assurance
  • Convenient freight options available throughout most parts of NSW, QLD & ACT including Brisbane, Gold Coast, Sunshine Coast, Sydney, Newcastle, Central Coast, Wollongong, Canberra and beyond

Inclusions and options with your new poly septic tank:

  • Heavy duty poly lid
  • 100mm PVC sewer inlet and outlet fittings fitted to your tank.
  • A poly baffle system installed ready to fill
  • A poly riser is available as an option

We stand alone in this industry being owned and operated by the same family since 1984 giving you peace of mind when it comes to your septic tank requirements. You will always be treated with respect and enjoy good old-fashioned service from our friendly and experienced team!

Please explore our impressive septic tank range below or contact our friendly team if you require any assistance.

  • 600-Litre-Wastewater-Poly-Septic-Tank

    ST 600 Litre Poly Septic Collection Well

    Heavy-Duty 600 Litre Poly Septic Collection Well

    Nominal Dimensions: 1175mm Diameter x 1000mm High  Shot Weight: 60kg
    Certified to AS/NZS 1546.1:2008

    The smallest poly septic in our range offering 600 litres of capacity. Collection Wells for sewage management are normally aggregating wells that allow sewer drainage to gravitate to a central point before pumping to a higher elevation sewer main or other discharge point or a treatment device. The collection well does not provide any form of treatment. This tank is also often used as a pump well or a valve station.

    Save hundreds of dollars with one of our poly septic tanks. Our septic tanks are super strong, very flexible and won’t crack like an alternative concrete tank. Please check with your local council for any special requirements that may be applicable for your installation. A Professional Licensed Plumber will be required for installation

    Freight: $150 ( standard freight areas, Click Here for Map )
    Persons/s required to assist our delivery driver: 1

    Please contact our friendly staff for a delivery quote, or for assistance with any queries.


    Read more
  • 1200-Litre-Wastewater-Poly-Septic-Tank

    ST 1200 Litre Poly Septic Collection Well

    Heavy-Duty 1,200 Litre Poly Septic Collection Well

    Nominal Dimensions: 1020mm Diameter x 2350mm High  Shot Weight: 140kg
    Certified to AS/NZS 1546.1:2008

    A compact poly septic tank with 1,200 litres of capacity. Collection Wells for sewage management are normally aggregating wells that allow sewer drainage to gravitate to a central point before pumping to a higher elevation sewer main or other discharge point or a treatment device. The collection well does not provide any form of treatment

    Save hundreds of dollars with one of our poly septic tanks. Our septic tanks are super strong, very flexible and won’t crack like an alternative concrete tank. Please check with your local council for any special requirements that may be applicable for your installation. A Professional Licensed Plumber will be required for installation

    Freight: $150 ( standard freight areas, Click Here for Map )
    Persons/s required to assist our delivery driver: 1

    Please contact our friendly staff for a delivery quote, or for assistance with any queries.


    Read more
  • 3000-Litre-Wastewater-Poly-Septic-Tank

    ST 3,000 Litre Poly Septic Tank

    Heavy-Duty 3,000 Litre Poly Septic Wastewater Tank

    Nominal Dimensions: 1740mm Wide x 1700mm Long x 1700mm High  Shot Weight: 200kg
    Certified to AS/NZS 1546.1:2008

    The second largest model in our poly septic tank range offering 3,000 litres of capacity. Designed for a medium size dwelling that is not connected to mains sewer. An ideal septic tank size for 4-5 people and perfectly suited for a small/medium sized Australian home.

    Save hundreds of dollars with one of our poly septic tanks. Our septic tanks are super strong, very flexible and won’t crack like an alternative concrete tank. Please check with your local council for any special requirements that may be applicable for your installation. A Professional Licensed Plumber will be required for installation

    Freight: $275 ( standard freight areas, Click Here for Map )
    Note: lifting equipment recommend

    Installation guide: Click Here

    Please contact our friendly staff for a delivery quote, or for assistance with any queries.


    Read more
  • 5000-Litre-Wastewater-Poly-Septic-Tank-1

    ST 5,000 Litre Poly Septic Tank

    Heavy-Duty 5,000 Litre Poly Septic Wastewater Tank

    Nominal Dimensions: 1740mm Wide x 2610mm Long x 1700mm High Shot Weight: 300kg
    Certified to AS/NZS 1546.1:2008

    The largest poly septic in our range offering a 5,000 litre capacity. Perfect for a medium/large size dwelling that is not connected to mains sewer. An ideal septic tank size for 6-8 people and perfectly suited for a large family home.

    Save hundreds of dollars with one of our poly septic tanks. Our septic tanks are super strong, very flexible and won’t crack like an alternative concrete tank. Please check with your local council for any special requirements that may be applicable for your installation. A Professional Licensed Plumber will be required for installation

    Freight: $275 ( standard freight areas, Click Here for Map )
    Note: lifting equipment recommend

    Installation guide: Click Here

    Please contact our friendly staff for a delivery quote, or for assistance with any queries.


    Read more