Stormwater Detention Tanks Adelaide
Custom fibreglass stormwater detention tanks built for your site
Available in sizes ranging from 4,000L – 82,000L
Adelaide’s irregular precipitation cycles, from scorching dry spells to sudden deluges during winter, demand robust stormwater control solutions. Our industrial-grade fibreglass stormwater detention tanks are crafted from superior materials to withstand South Australia’s challenging weather extremes and safeguard your Adelaide property. Available in sizes ranging from 4,000L to 82,000L, Access stormwater solutions can be customised to suit your site’s unique requirements, guaranteeing decades of reliable service.


Built tough for
heavy rainfall & runoff
Superior Flood Control
Manage and reduce peak stormwater flows, protecting your site from flooding and water damage.
Lasts 100+ Years
Fibreglass provides exceptional longevity, ensuring reliable performance without the risk of cracking or structural failure.
Built-in Water Release
Controlled water release at regulated rates, reducing stress on drainage systems and infrastructure.
Cost-effective Installation
Simplify transport and reduce labour costs with robust, lightweight, and easy-to-install tanks.
Site-specific Engineering
Custom-designed to meet your site’s specific conditions, ensuring compliance.
15 Year Industry Warranty
We stand by our tanks with a 15-year industry warranty that gives you confidence long after installation.

Protect your site from flooding
Detention tanks are distinct from regular water tanks in one key aspect: they sit empty until it rains. The smart valve slowly lets water out over time, handling Adelaide’s sudden heavy rain without overwhelming your site’s drainage. This slow-release system is an ideal solution for protecting sites across Adelaide from flooding by ensuring safe stormwater runoff.

Stormwater detention tanks frequently asked questions
What is the difference between a rainwater retention tank and a stormwater detention tank?
A rainwater retention tank stores rainwater for domestic use, while a stormwater detention tank holds stormwater temporarily for release into the drainage system.
Do I need a stormwater detention tank?
Whether you need one depends on factors like property size, local council regulations, and existing stormwater infrastructure. Many new properties, especially in areas with significant impervious surfaces, are required to install a stormwater detention tank as part of their development approval.
How do I determine the appropriate size for my stormwater detention tank?
Consider factors like property size, council requirements, and available space.
How do I maintain my stormwater detention tank?
Regular inspection and cleaning of the tank and associated components are important.
Engineered to outlast
the competition
Concrete Tanks
- Service life of 50+ years
- Heavy, labour-intensive installation
- Difficult to transport
- Can crack over time
- Weakens with methane gas exposure
Access Tanks
- Service life of 100+ years
- Lightweight, easy to install
- Easy to transport
- Won’t warp, crack, or corrode
- Built tough for all conditions
Plastic Tanks
- Service life of 20+ years
- Easy to install but structurally weak
- Prone to damage during transport
- Notorious for warping and cracking
- Vulnerable to UV exposure
Get a free no-obligation stormwater detention tank quote
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We deliver stormwater detention tanks across Australia
Our lightweight tanks get delivered straight to your Adelaide job site. We can organise shipping throughout SA, or you can use your regular preferred transport company. Much lighter than concrete but tougher than plastic, our tanks are easy to move around without slowing down your SA project. Unlike heavy concrete alternatives, our tanks only require a standard crane to lift them into place. No complicated setup means less time on-site and more money in your pocket.