engineered poly products

Engineered Poly Products

Poly Septic Systems Offer Unbeatable Benefits

Our range of septic tanks and drainage systems are manufactured and certified in accordance with all relevant Australian standards and meet with all Department of Health WA, NT and SA approvals.

Poly Septic Tank Certification

We use only the highest quality polyethylene in the manufacture of our tanks, meaning they are durable, UV stable, lightweight and easy to transport and install. COERCO poly septic tanks are fast becoming the product of choice over concrete designs thanks to these unique properties.

From small, space-saving septic tanks through to industrial size large capacity systems, all our tanks come as a complete kit including a lid and inlet and outlet fittings.

Learn More About Our Products

Click on one of the categories below to read more about the specific benefits of our septic tanks and drain systems:

Ready To Get A Quote?

Would you like to improve your farm’s water planning, efficiency and productivity? Are you ready to invest in products that will last for decades and revolutionise your everyday operations? Get in touch today for a no-obligation chat and free quotation.
Call us: 1800 860 851 or 1800-646-277 | Email us:
Or find your nearest distributor here
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Get Your FREE Starter Pack Guide to Septic Systems


Learn about the funcdamentals of septic systems from septic tank size, leach drain length, trafficablility, underground depth, and more.

Leach Drain System

Learn the unique benefits of our recycled leach drain systems. Environmentally friendly, Surprisingly Effective

Septic Tank Features

Discover what makes Coerco septic tanks the wastewater solutions of choice.

In-Depth Comparison

See the full spectrum of the qualities, benefits and drawbacks of each type of septic material.

The Highest Rated Poly Septic Tanks Manufacturer... By Customer Reviews!

" Whilst proceeding through a home upgrade, we were directed to upgrade our 2 tank septic system by our Council’s Health Dep’t. One of their ... Read More

David Couch
Mary Brook, WA

" We have been very happy with the polyethylene septic tanks provided by Coerco, and we now use these as standard on all our new homes. Previously we ... Read More

Andrew Sharpe - Stallion Homes
Northam, WA

" As an agent for Coerco they are so easy to deal with making it even easier for the customers. Nothing is an issue for them. " Read More

Craig Bassett - Elders Ltd
Geraldton, WA

" Fantastic Experience. The service was 10 out of 10, and the process was seamless from quote through to delivery. Was even more impressed after ... Read More

Darren Tindal
Albany, WA

" Prompt delivery, quality product, good advice. Water tank and septic system. "

Frank The Sheepdog
Katanning, WA

" Extra special thanks to the team at “Coerco”. I bought a full septic system and leach drains from them for my 40 acre property in Gingin. I can’t ... Read More

Sarah Kelly
Gingin, WA

" We regularly deal with Coerco for tanks, leach drains and a range of other products. I find them to be easy to deal with, helpful, quick to respond ... Read More

Rob Hales
Bullsbrook , WA

Ready To Get A Quote?

Choose a poly septic tank or leach drain system from COERCO and benefit from high-quality products, easy installation and superior customer service.

Talk to our friendly team today for expert advice and a no-obligation quotation.

get a FREE quote