Beat the old - Coerco’s Premium Septic Systems are Conveniently the Best

Designed by a 100% Australian owned company with decades of experience, the price you pay for Coerco septic tank systems is convenience. From delivery, to installation, to performance, our poly septic tank & leach drain systems are no-nonsense and easy. You can’t find a better septic system at an affordable cost without sacrificing quality!

Coerco — Reliability in an unpredictable world


Septic failures are agonising, costly and difficult to pinpoint.

So, we made sure our septic tanks for sale won’t cost you trouble. It’s time for you to reap its many benefits:

  • Manufactured to meet Department of Health approvals:
    Western Australia, Northern Territory, and South Australia
  • Certified to AS1546.1 for a range of septic and wastewater products.
  • Lightweight. Easy to transport, install and use.
  • Made of the highest quality polyethylene for durability.
  • Coerco septic tanks come as a complete kit with a lid, inlet and outlet fittings.
  • Septic tank size come in a variety to suit your requirements.
    Whether you need a small septic tank or an industrial size large capacity system, a poly septic tank can do it better.
sep1450-395x395

1,450 Litre Septic Tank

1,450 Litre Septic Tank

  • Lightweight, easy to transport and install
  • Manufactured from durable polyethylene
  • Anti flotation ring and ribbing incorporated into design
  • Certified to Australia Standard AS/NZS1456.1 and approved by Department of Health – WA & NT
  • Supplied as complete kit including lid, inlet & outlet ‘T’ pieces
  • Leach Drain Systems also available
  • Certified to AS1546.1 and approved by WA & NT Department of Health
Learn More
sep2200

2,200 Litre Septic Tank

2,200 Litre Septic Tank

  • Lightweight, easy to transport and install
  • Manufactured from durable polyethylene
  • Anti flotation ring and ribbing incorporated into design
  • Certified to Australia Standard AS/NZS1456.1 and approved by Department of Health – WA & NT
  • Supplied as complete kit including lid, inlet & outlet ‘T’ pieces
  • Leach Drain Systems also available
  • Certified to AS1546.1 and approved by WA & NT Department of Health
Learn More
sep3200

3,200 Litre Septic Tank

3,200 Litre Septic Tank

  • Lightweight, easy to transport and install
  • Manufactured from durable polyethylene
  • Anti flotation ring and ribbing incorporated into design
  • Certified to Australia Standard AS/NZS1456.1 and approved by Department of Health – WA & NT
  • Supplied as complete kit including lid, inlet & outlet ‘T’ pieces
  • Leach Drain Systems also available
  • Certified to AS1546.1 and approved by WA & NT Department of Health
Learn More
sep4000

4,000 Litre Septic Tank

4,000 Litre Septic Tank

  • Lightweight, easy to transport and install
  • Manufactured from durable polyethylene
  • Anti flotation ring and ribbing incorporated into design
  • Certified to Australia Standard AS/NZS1456.1 and approved by Department of Health – WA & NT
  • Supplied as complete kit including lid, inlet & outlet ‘T’ pieces
  • Leach Drain Systems also available
  • Certified to AS1546.1 and approved by WA & NT Department of Health
Learn More
sep7000

7,000 Litre Septic Tank

7,000 Litre Septic Tank

  • Lightweight, easy to transport and install
  • Manufactured from durable polyethylene
  • Anti flotation ring and ribbing incorporated into design
  • Certified to Australia Standard AS/NZS1456.1 and approved by Department of Health – WA & NT
  • Supplied as complete kit including lid, inlet & outlet ‘T’ pieces
  • Leach Drain Systems also available
  • Certified to AS1546.1 and approved by WA & NT Department of Health
Learn More
sep11000

11,000 Litre Septic Tank

11,000 Litre Septic Tank

  • Lightweight, easy to transport and install
  • Manufactured from durable polyethylene
  • Anti flotation ring and ribbing incorporated into design
  • Certified to Australia Standard AS/NZS1456.1 and approved by Department of Health – WA & NT
  • Supplied as complete kit including lid, inlet & outlet ‘T’ pieces
  • Leach Drain Systems also available
  • Certified to AS1546.1 and approved by WA & NT Department of Health
Learn More
sep15000

15,000 Litre Septic Tank

15,000 Litre Septic Tank

  • Lightweight, easy to transport and install
  • Manufactured from durable polyethylene
  • Anti flotation ring and ribbing incorporated into design
  • Certified to Australia Standard AS/NZS1456.1 and approved by Department of Health – WA & NT
  • Supplied as complete kit including lid, inlet & outlet ‘T’ pieces
  • Leach Drain Systems also available
  • Certified to AS1546.1 and approved by WA & NT Department of Health
Learn More
sep19000

19,000 Litre Septic Tank

19,000 Litre Septic Tank

  • Lightweight, easy to transport and install
  • Manufactured from durable polyethylene
  • Anti flotation ring and ribbing incorporated into design
  • Certified to Australia Standard AS/NZS1456.1 and approved by Department of Health – WA & NT
  • Supplied as complete kit including lid, inlet & outlet ‘T’ pieces
  • Leach Drain Systems also available
  • Certified to AS1546.1 and approved by WA & NT Department of Health
Learn More
sep23000

23,000 Litre Septic Tank

23,000 Litre Septic Tank

  • Lightweight, easy to transport and install
  • Manufactured from durable polyethylene
  • Anti flotation ring and ribbing incorporated into design
  • Certified to Australia Standard AS/NZS1456.1 and approved by Department of Health – WA & NT
  • Supplied as complete kit including lid, inlet & outlet ‘T’ pieces
  • Leach Drain Systems also available
  • Certified to AS1546.1 and approved by WA & NT Department of Health
Learn More
sep27000

27,000 Litre Septic Tank

27,000 Litre Septic Tank

  • Lightweight, easy to transport and install
  • Manufactured from durable polyethylene
  • Anti flotation ring and ribbing incorporated into design
  • Certified to Australia Standard AS/NZS1456.1 and approved by Department of Health – WA & NT
  • Supplied as complete kit including lid, inlet & outlet ‘T’ pieces
  • Leach Drain Systems also available
  • Certified to AS1546.1 and approved by WA & NT Department of Health
Learn More
sep31000

31,000 Litre Septic Tank

31,000 Litre Septic Tank

  • Lightweight, easy to transport and install
  • Manufactured from durable polyethylene
  • Anti flotation ring and ribbing incorporated into design
  • Certified to Australia Standard AS/NZS1456.1 and approved by Department of Health – WA & NT
  • Supplied as complete kit including lid, inlet & outlet ‘T’ pieces
  • Leach Drain Systems also available
  • Certified to AS1546.1 and approved by WA & NT Department of Health
Learn More

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See What Others Are Saying

double quote

Sam Davies

Western Rural Earthmoving


They are just so easy to use. Having the inlet and outlet 'T' already fitted saves us a lot of time.

Looking for Pricing?

Choose a poly septic tank or leach drain system from Coerco and benefit from high-quality products, easy installation, and superior customer service or Talk to our friendly team today for expert advice and a no-obligation quotation.