Our HydroStor® Retention System allow for underground storage of runoff water with or without recharge of the groundwater table

• Designed for projects where the available depth is very limited.  The installed HS31 chamber stores 0.88m³ per chamber.
• Designed for projects with limited burial depths, the installed HS75 chamber stores 2.12m³ per chamber.
• Designed for large volume projects or where space is limited, the installed HS180 chamber stores 5.0 m³ per chamber.
• Designed for projects where space is at a premium. For equal volume, the HS290 chamber offers the smallest footprint of our HydroStor® range. The installed HS290 chamber stores 4.66m³ per chamber.
• The four retention chambers meet CSA B184.2, ASTM F2418 and ASTM F2787 standards.
• Used with a waterproof geomembrane for an application of a retention basin without recharge of the groundwater table.
• Withstands CL-625, H-25 and HS-25 loads.
• The pretreatment unit effectively prevents the spread of sediments eliminating any risk of clogging the retention basin. It also captures hydrocarbons and floating debris thereby preserving the quality of the groundwater table.”