Our Tanks Stand Up To The Toughest Demands, Guaranteed

COERCO’s septic tanks and leach drain systems are manufactured as a one-piece moulding to ensure there are no weak points or joints in their construction. This makes them exceptionally strong, durable and reliable.

Septic Tanks: Manufactured from polyethylene materials, our septic tanks are resilient, light-weight and very flexible, making transportation to your site and installation easy. They deliver unmatched value and benefits, especially when compared to the more traditional options like concrete. From small, space-saving septic tanks to large capacity systems, all our tanks are delivered as a complete kit, including a lid and inlet and outlet fittings. They come with an anti-flotation ring and ribbing incorporated into the design and also have a 5-year manufacturer’s warranty. Our commitment to producing high-quality products results in a diverse selection of septic tanks that are engineered to meet the needs of traditional and specialized applications. Our septic tanks are available in a vast range of capacities from 1,450 litres to a massive 23,000-litre underground tank. Aside from our standard range, which includes 1,450, 2,200 and 4,000-litre septic tanks, our team is happy to work with you in designing a bespoke solution for your project needs.

Leach Drain Systems: Manufactured using the finest polypropylene materials, COERCO leach drain products are lightweight, yet strong, durable and resilient. They are engineered to work as a standalone system or alongside our septic tanks making them the ideal solution for your effluent waste management. They can also be integrated into any waste water management project that requires a leaching system. Our leach drains are delivered to you as a flat-packed construction and also feature a modular design that makes for easy configuration and installation. The systems are very flexible with a range of configurations for every individual requirement and are designed to meet strict industry regulations and standards.

COERCO is an ISO9001:2015 certified company, which means every project we take on is carried out in accordance with all necessary Australian standards. Our range of septic tanks and drainage systems are manufactured and certified to Australian Standard (AS/NZS1456.1) and meet all Department of Health WA, NT and SA approvals.

With over 150 years of combined experience and the expertise required to provide quality in every area, COERCO is the leading manufacturer of septic tanks for commercial and environmental applications in Western Australia and worldwide.

Learn More About Our Products

Click on one of the products below to read more about the specific benefits of each of the septic system products we offer:

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Effective Solutions For All Your Working Needs

Ready to learn more about how Coerco can save you time and money at work? Our extensive range of products and expert team of engineers are ready and waiting to talk to you about your requirements, and how we can revolutionise your everyday operations.

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Delivering Proven And Trusted Solutions To The Commercial & Environmental Industry

" We took delivery of 4 x 50KL commercial water tanks from Coerco this week. Coerco are fantastic for us to deal with when we build in rural settings. Their ... Read More

Moritz Kurys-Romer
Willyabrup, WA

" Exceptional products meeting all the Australian standards. Excellent service too, from design to supply. Well done guys! "

Mavondo Abel Hlophe
Malaga, WA

" Good to deal with prompt service and really good communication. Delivery service spot on! "

Clinton Smith, Perenjori

" Coerco have always been our go-to supplier for polytanks. Good quality tanks. We've requested to customise the tank fittings and were executed well. Great ... Read More

Jerica Marise Razon
Malaga, WA

" Purchasing a water tank for the Kendenup fire brigade, I received excellent service from all members of the Coerco group with whom I liaised. They have a ... Read More

Brian Appleby
Kendenup, WA

" Great Customer service, awesome deliveries and outstanding product range! Always a pleasure working with such a professional team! "

Mik Dob
Kalgoorlie, WA

" Exceptional service from the first enquiry to the above and beyond delivery service the company achieves. They make choosing a tank supplier a simple answer! ...

Grant Oliver

" Installed tank near WA/SA border. Coerco managed their supply and delivery logistics professionally. No stress for me. Thank you Adam and Craig. "

Stephen Hoschke
Mt Lawley, WA