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Septic Tanks

Waste Management

Septic Tanks for Off Grid Wastewater Treatment

For properties without access to mains sewer, a septic tank is the foundation of a reliable, compliant wastewater system. This range features Polymaster's rotomoulded polyethylene septic tanks in 3,100L and 4,550L capacities, built to handle household wastewater without the cracking or corrosion risk of older concrete tanks. Prices currently range from $2,875 to $4,075.

✓ 100% Aussie Owned & Operated ✓ Best Shipping Quotes ✓ Price Match Guarantee

Choosing the Right Septic Tank Size

Septic tank capacity is generally driven by household size and local council requirements. The 3,100L tank suits smaller households, while the 4,550L option gives extra capacity and a longer service interval for larger households or properties with higher wastewater volumes. Polymaster's rotomoulded polyethylene construction resists cracking and corrosion, unlike older concrete tanks, and is lightweight enough to make installation more straightforward.

Features Worth Looking For

  • ✓Rotomoulded polyethyleneWill not crack or corrode like concrete tanks, with a long service life.
  • ✓3,100L or 4,550L capacityChoose the size that suits your household and council requirements.
  • ✓Lightweight constructionEasier to handle and install than a concrete equivalent.
  • ✓Built for Australian conditionsDesigned to handle the demands of off grid and rural properties.

Frequently Asked Questions

What size septic tank do I need?

This depends on household size and your council's requirements. Smaller households generally suit a 3,100L tank, while larger households or higher wastewater volumes suit the 4,550L option. Check with your local council or plumber to confirm requirements for your property.

Do I need council approval to install a septic tank?

Yes, septic tank installation typically requires council approval and must be installed by a licensed professional. Check with your local council before purchasing and installing.

Do you offer a price match guarantee?

Yes. Found it cheaper elsewhere? Let us know and we will do our best to beat it.

Delivery Information

Septic tanks are large items that travel as freight. Get in touch for current lead times and a shipping quote to your address.

Explore Related Ranges

A few other ranges worth a look for waste and water management.

Pump Stations Waste Management Rainwater Tanks

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