Rainwater Retention Detention Tank
RWTRET




Rainwater Retention Detention Tank
RWTRET
CONTROLLED RELEASE INTO STORMWATER SYSTEM
What are Retention – Detention Tanks?
Retention and Detention tanks are often prescribed by councils and government bodies to control the release of water into the stormwater system.
All Polymaster above-ground rainwater tanks (round or slim) can be adapted to meet your retention or detention needs.
Detention Function
In the event of heavy rainfall, the upper portion of the tank temporarily contains the water surge. This process is known as stormwater detention and takes the pressure off municipal stormwater systems with this water being slowly released through a small outlet.
Available from 200L to 50,000L



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When you invest in a rainwater tank it's important that you get one that lasts and is fit for purpose. Australian standards are put in-place to give households, peace of mind when it comes a tanks’ usability.
The relevant standards to look out for (from an ISO9001 tank manufacturer) are:
AS/NZS 4766:2006
Polyethylene storage tanks for water and chemicals
AS/NZS 4020:2018
Testing of products for use in contact with drinking water
What makes Polymaster tanks the toughest?
Self-suppoting roof design means no support poles are necessary
Extra thick walls for maximum strength
Double strength UV+ resin ensures ultimate protection against the harsh sun
One-piece construction with no joins, seams or part-lines
Questions? We are here to help.
We know that sometimes solutions involve some out of the box thinking, we work with you to make a custom solution that matches your exact situation and actually solves your problem. Fill out this form and our team will be in touch. or call us below.


