A new narrative is emerging for plastic pipe systems. They are not single-use plastics, but robust, long-life products with a commitment to circularity.
When we think of plastics we generally think of waste, often picturing single use such as bottles and disposable packaging. But the Plastics Industry Pipe Association of Australia Limited (PIPA) is working to change the narrative, highlighting the positive use of plastics – how plastic pipes are designed for longevity and have a vital role to play in the circular economy.
These are engineered products, built to last for at least 100 years. Not only are they designed to be durable, their manufacturing process is clean and efficient, with low embodied energy and the ability to be manufactured with re-used scrap material, ensuring that waste is designed out from the very beginning.
The core of their environmental benefit lies in their long life span and durability in use, according to Cindy Bray, PIPA Executive General Manager.
“We want people to understand that plastic pipes are an engineered solution that, when designed and made to the relevant Australian standards, are durable and long-lasting and can be used for the good of the environment,” Cindy says.
Unlike other materials that may corrode or degrade over time, plastic pipes are resistant to chemical attack and maintain their integrity in harsh soil and wastewater environments. This ensures they can deliver vital services reliably for decades with minimal maintenance.
The commitment to circularity extends beyond their long life. PIPA has established a recycling program to ensure that even after a century of use, plastic pipes can be recovered and recycled into new products.
Cindy says while the low volume of pipes in waste streams means the vast majority are still in their first life cycle, the industry is proactively working with stakeholders and recyclers to divert resources from landfill.
“Our commitment to the Australian community is simple – we aim to recycle the maximum amount of usable plastic pipe and other suitable materials into new plastic pipes,” she says.
“PIPA, working with a variety of partners, has established a Plastic Pipes Recycling Program, linking PIPA members and established plastic recyclers with information and locations for end users to deliver their no longer needed pipes.”
Not all plastic is the same, and Cindy emphasises that you can’t use just any recycled content in plastic pipes – it must be the same requirements as virgin material to ensure product performance.
PIPA’s POP208 guideline provides a clear framework for how recycled polyethylene (PE), polypropylene (PP), and rigid PVC (polyvinyl chloride) can be safely and effectively incorporated into non-pressure pipe applications.
The association has also released a discussion paper The Use of Recycled Content in Plastic Pipes, highlighting the plastic pipe industry’s commitment to sustainability, safety, and performance.
PIPA is also a strong advocate for reuse and repair.
“Many plastic pipe systems in buried infrastructure can be reused as a host for new pipes, a process that significantly reduces environmental impact by eliminating the need for new trenches,” Cindy says. “This approach, alongside readily available repair options, further extends the life span of critical infrastructure. Through these initiatives, the plastics pipe industry is not only engineering a product for longevity but also building a system for a true, long-term circular economy.”
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