In no less than 5 versions the StormTech-system succeeds in seriously reducing installation and operating costs of underground rainwater retention. The tunnel elements are chosen according to your desired storage volume and the parameters of your project.


The StormTech tunnel elements offer an unseen ratio of retention capacity versus surface, and enable both rainwater infiltration and storage. Manufactured in injection moulded polypropylene and polyethylene resins, these lightweight elements are swiftly and easily installed. The result is an efficient underground system of rainwater storage, that can be easily inspected and maintained, and comes with a proven and documented warranty concerning maximum allowable loads.