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.

Large Access Tanks fibreglass wastewater system being crane-lifted over residential neighbourhood

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.

Large Access Tanks fibreglass wastewater system being crane-lifted over residential neighbourhood

Stormwater detention tanks frequently asked questions

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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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 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.

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