Stormwater Detention Tanks
Stormwater detention tanks built for your site
Available in 4,000L – 82,000L
When rainfall becomes runoff, a reliable stormwater detention tank becomes essential. Our heavy-duty fibreglass stormwater detention tanks are crafted from premium-quality materials. Designed to deliver exceptional performance, reliability, and flexibility for stormwater management, these fibreglass tanks won’t let you down.
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
Stormwater detention tanks differ from standard rainwater tanks, as they’re designed to stay empty except during rainfall. Their key feature is a specialised valve that gradually releases stored water over time, effectively managing stormwater runoff and protecting your site from flooding and drainage issues.
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
Hear from our clients
Well done in bringing this product to the market
Hi Rob. Just wanted to pass on how pleased I am with your tanks. You have bridged the gap with a product that addresses the problems with the light weight poly products and the heavy concrete tanks. You have a brilliant design that will not split or distort as the poly tanks do or delaminate in a corrosive or acidic environment that will destroy any concrete tank. They do not need any heavy lifting equipment to install or transport and have a riser system that can be adjusted to suit the ground level perfectly without the need to position the tank to suit this. A truly brilliant product that will give years of service. Well done in bringing this product to the market. Kind regards, Wayne
Wayne Mclean
Wayne Mclean Plumbing Services
All Water Plumbing has been working closely with Access Tanks now for 10+ Years
All Water Plumbing has been working closely with Access Tanks now for 10+ Years as a distributor of their products throughout the Eyre Peninsula region. Their product quality and service are second to none including their technical support, this has made it very easy for us to promote and sell their Wastewater Systems and Septic Tank Products with confidence. The product features and light weight design allow for installation in challenging sites giving customers an alternative to other brands. We are extremely happy to be associated with Access Tanks and will continue to support them.
Trevor Castley
ALL Water Plumbing
Phil Wilkinson Plumbing and Gas Fitters have been installing the septic tanks and tank riser and lids for around 10yrs
Phil Wilkinson Plumbing and Gas Fitters have been installing the septic tanks and tank riser and lids for around 10yrs. These products whether it’s 3,000 or 30,000 ltr tank you need or just the riser they can do it. The risers are fantastic, lightweight yet very strong, sturdy and well made, these can be installed at any depth. The unit is a once buy, you’ll never have to dig it up again and unlike the concrete alternative, is level with the ground and does not need 2 men to safely lift the lid. It’s a no- brainer get it done today!
Phil Wilkinson
Phil Wilkinson Plumbing and Gas Fitters
The saddle and riser worked out perfectly
The saddle and riser worked out perfectly. Easy to put in place – a brilliant design in it’s simplicity. I’m very happy that I came across you online. The pump out boys (Alexandrina council) we’re seriously impressed too – I’m guessing they’re hoping a lot more people put them in place too (save their backs)!
Joe Rasera
Loved the product!
Made life very easy compared to concrete!
Tim Williams
Businesses that
trust us
We deliver stormwater detention tanks across Australia
Our lightweight septic risers can be shipped directly to your project location. We can organise the freight for you, or you can call on a trusted partner to deliver the new riser to your site.
Easily installable, our risers eliminate the hassle of long, exhaustive installations, helping you cut down on labour costs and reach your milestones faster. Wherever you are in Australia, our tanks are guaranteed to help keep your project running smoothly.