Septic Tanks

  • Lightweight design for easy handling, transport, and installation

  • Manufactured from tough, UV-stabilised polyethylene

  • Anti-floatation ring and structural ribbing built in for ground stability

  • Certified to AS/NZS 1546.1 for on-site wastewater treatment

  • Supplied as a complete kit with lid, inlet, and outlet ‘T’ pieces

  • Coerco effluent disposal systems also available

Septic Tank Range

Explore our range of septic tanks — engineered for long-term performance and full compliance with Australian standards.

CODEDESCRIPTION
SEP-1450
1,450 Litre Septic Tank - No Baffle
SEP-2200
2,200 Litre Septic Tank - No Baffle
SEP-3200
3,200 Litre Septic Tank
SEP-4000
4,000 Litre Septic Tank
SEP-7000
7,000 Litre Septic Tank
SEP-11000
11,000 Litre Septic Tank
SEP-15000
15,000 Litre Septic Tank
SEP-19000
19,000 Litre Septic Tank
SEP-23000
23,000 Litre Septic Tank
SEP-27000
27,000 Litre Septic Tank
SEP-31000
31,000 Litre Septic Tank

Compliant. Reliable. Ready to Install.

Coerco’s one-piece polyethylene septic tanks are designed for simple installation, long-term reliability, and full compliance with Australian Standards. UV-stabilised and impact-resistant, they’re built to perform in rural and remote environments with minimal maintenance.

With over 30 years of industry experience, we back every tank with proven performance, strong warranties, and dedicated support — giving you confidence from day one.

Installation & Warranty Guide

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Septic Tank IOM

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Warranty Guide

Working with Coerco has been enjoyable. They've listened to our design input throughout the constructability reviews.

Cameron Green, Surface Works Area Manager

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