HydroStor™ Chamber

High performance stormwater storage chambers

Product Type: Chamber

HydroStor™ Chamber


When it comes to stormwater chambers, the road from good to great leads directly to HydroStor, the industry’s highest performing chamber. Chamber systems are a highly effective way to maximize commercial land usage by providing underground stormwater storage & recharge.

Prinsco’s chamber systems can be easily modeled with the HydroCAD Stormwater Modeling System and the Civil 3D Auto CAD Module. Both tools simplify the process of designing a system meeting specific storage and footprint requirements.

Contact your Prinsco sales rep to purchase HydroStor™ Chamber.



  • High performance polypropylene material
  • Meets or exceeds ASTM F2418 product standard & ASTM F2787 design standard
  • Meets AASHTO H20 live load & HL93 design load requirements
  • Advanced injection molding technology for maximum structural performance

System Design

  • Maximum land utilization & minimal environmental impact
  • Smaller footprint with lower installed cost than similar chambers
  • Features integral connectors for simplified assembly
  • Design tool available at Prinsco.com/HydroStor-Resources
  • Available as part of a complete solution with end caps, pipe manifolds & pretreatment options ons


  • Integrated Handles for safe on-site handling
  • Sturdy and lightweight for safe transport and placement by 2 people
  • Specially designed pallet for trouble free handling
  • Maximum stacking density to reduce on-site staging footprint

Available Sizes





Installed Storage Capacity* 180 ft3/chamber 75 ft3/chamber 31 ft3/chamber
Height 45.5″ 30″ 16″
Width 77.8″ 51″ 34″
Unit Length 88.7″ 85.4″ 87.8″
Installed Length 85.3″ 84.9″ 85.4″
Weight 127 lbs 70 lbs 32 lbs
Chambers/Pallet 19 33 45
Material Polypropylene Polypropylene Polypropylene
Mfg. Process Injection Molding Injection Molding Injection Molding
Special Features Integrated Handles Integrated Handles Integrated Connectors
ASTM Standards Meets or Exceeds Meets or Exceeds Meets or Exceeds

* Assuming 40% void volume of backfill with 9″ bedding & 12″ cover for HS180 and 6″ bedding & 6″ cover for HS75 & HS31

Installation Specifications



HS75 & HS31

12″ min. Backfill Above Chamber 6″ min.
9″ min. Bedding 6″ min.
8″ Chamber Spacing 6″
12″ Backfill at Edge of System 12″
23.5″ Minimum Cover 18″
8′ Maximum burial Depth 8′
  • Meets or exceeds ASTM F2418 product standard
  • Meets or exceeds ASTM F2787 design standard
  • Meets AASHTO H20 live load requirement
  • Meets AASHTO HL93 design load requirement

Product Brochures



Installation Guides

CAD Drawings

Engineering Guides

Technical Notes


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