The HydroChamber is an arched chamber attenuation system used to provide an underground storage tank for stormwater runoff in attenuation and soak away applications. It can be used under HGV trafficked areas and car park areas as well as non-trafficked areas (e.g. green amenity areas). The stormwater attenuation system has many advantages such as BBA / WRc certification, superior structural strength, silt management, maintenance and inspection capabilities along with many more benefits.

The stormwater attenuation chambers are manufactured from high density polyethylene and are backfilled with 35/50mm clean washed crushed stone, the corrugated arch shape of the HydroChamber provides excellent structural strength as shown in independently witnessed field tests where the chambers were exposed to loads 3.5 times that expected in service. HydroChambers can be used in three different types of stormwater management systems.