Pre-Con Products

Simi Valley,  CA 
United States
  • Booth:

Pre-Con Products developed the STORMPRISM product line in response to the growing need of stormwater capture and infitltration for Southern California.  Now we have expnaded our offering nationwide to meet the growing demand for stormwater management.  The two leading systems of StormPrism are StormPrism EQ (SPEQ), and StormPrism 360 (SP360).

The SPEQ is our most efficient system with the highest void ratio and can be constructed for internal heights ranging from 3'-14'. Its large cavernous interior promotes good air flow and visibility for safer entry than other comparable systems on the market. The floor is also flat allowing for drainage to a corner when constructed on a sloped bedding.

The SP360 system uses a repeating tesselation of square modules that can be arranged into a variety of patterns to accommodate any site footprint. The modules have a maximum weight of 14,000 lbs and come in an 8'x8' square dimension which allow for easy installation. The SP360 ranges in internal heights of 4'-7.5'. The open floor units can also be set directly on gravel for infiltration.

StormPrism units are produced by National Precast Concrete Association (NPCA) certified plants.

Brands: Pre-Con Products, StormPrism, StormPrismEQ (SPEQ), StormPrism360 (SP360), StormPrism Vault (SPV), StormPrism DryWell (SPDW), Hexiblock Foundation.


  • StormPrism EQ
    Gates Canyon Park in Calabasas CA. 183,000 cu ft of storage with dry-wells and a rainwater harvesting component....

  • StormPrism EQ is Pre-Con's solution to the nation-wide growing demand to capture and infiltrate stormwater.  These precast concrete units are manufactured to meet Seismic and H-20 traffic loads.  Systems range from 3'-14' internal heights with up to a 96% void ratio from floor to ceiling in its tallest configuration.  Please visit or website  to learn more.
For Technical Support with this webpage, please contact support