R-Tank® Infiltration System

R-Tank® stormwater systems provide underground storage of stormwater. After a rain event fills the R-Tank, stormwater can flow into the drainage system, infiltrate into the ground, or be reused. The system is an alternative to stormwater basins and a more efficient, space saving alternative to other underground systems for detention, infiltration, and recycling stormwater.

R-Tank is a modular system and can be assembled to a variety of heights from 2” to just under 7’. This rigid system can be placed beneath a variety of surfaces including: Parking Lots, Streets and Access Roads, Driveways, Landscaping, Athletic Fields/Playgrounds, Swales and Channels.

R-Tank Product Brochure

R-Tank stormwater modules can be used for a variety of applications including: Retention and Infiltration, Detention, Recycling or Harvesting, Pond Retrofits, Dry Wells, and Bioretention.  R-Tank stormwater systems have between 95% and 98% void space meaning a more efficient, space saving solution for detention, infiltration, and recycling stormwater.

Additional Benefits of the R-Tank System include:

  • High Capacity
  • Modular Design Footprints
  • High Strength
  • Increased Infiltration and Exfiltration
  • Easy to Transport
  • Lightweight and Quick to Install
  • Permanent and Maintainable Storage Volume

The R-Tank is a modular system available in multiple configurations (LD, HD, SD, UD, and XD), to fit a variety of depth and loading requirements. And with an unlimited array of possible design layouts, the R-Tank can adapt to your project to make the most economical systems possible.


  • Light Duty module (30 psi)
  • Ideal for applications in green space
  • Four internal plates
  • 12” – 36” cover


  • Heavy Duty module (33.4 psi)
  • Standard module for HS-20 traffic application
  • Five internal plates
  • 18” – 84” cover


  • Super Duty module (42.9 psi)
  • Higher safety factors for shallow traffic applications and deeper cover
  • Five internal plates
  • 120” maximum cover


  • Extreme Duty module (320 psi)
  • Traffic loads with 6” cover or 16.5’ maximum cover
  • Available from 2” – 10’
  • 92% void space


  • Ultra Duty Module
  • Blend of Plates & Columns
  • Traffic Loads at Shallow Depths (Min. 12” of Cover)

Sediment Forebays

  • Improve sediment removal
  • Reduce costs and frequency of maintenance
  • Pretreats incoming stormwater by allowing sediment to settle out before entering the R-Tank System