Treatment, Volume Control & Volume reductions icons


WetPave is a combination of permeable pavers, a rock reservoir, containing an under drain, and a downstream biofiltration system capable of removing high levels of TSS, nutrients, metals, hydrocarbons and bacteria. This advanced LID solution provides superior treatment over traditional space consuming bioretention or rain garden systems.

The WetPave maximizes buildable land with the use of permeable pavers to collect and store stormwater runoff under parking lots, driveways, streets or walkways.  As runoff passes through the pavers and top layers TSS and other particulates are removed. Pretreated runoff is stored in the underlying rock reservoir which can be of various depths to meet volume reduction or control requirements.  Within the reservoir an under drain system collects and transfers water into a downstream horizontal flow biofilter system known as the Modular Wetland. The Modular Wetand’s unique horizontal flow design allows it to collect runoff several feet below finish surface to maximize upstream storage volumes. The Modular Wetland slowly treats the passing runoff to remove stormwater contaminants.  Runoff passing through the system is controlled by an internal orifice assembly. Drain down times can be set to meet state and local requirements. WetPave is the perfect way to meet LID, volume and treatment requirements without giving up valuable land.


Discover the possibilities.



Volume Based



Add lush landscaping.


Specifications Modular Wetlands MWS Linear stormwater bmp


Download Specs

Installation Manual Modular Wetlands MWS Linear stormwater bmp

Installation Manual

Download Manual

Maintenance Manual Modular Wetlands MWS Linear stormwater bmp

Maintenance Manual

Download Manual


Washington State Mt Shucksan TAPE approved

Washington DOE

View Certificate

Virginia DEQ approved Modular Wetlands MWS Linear stormwater bmp

Virginia DEQ

View Certificate

Rhode Island shore DEM approved Modular Wetlands MWS Linear stormwater bmp

Rhode Island DEM

View Certificate


Pollutant Removal Efficiency
Total Suspended Solids 85%
Total Phosphorus 64%
Ortho Phosphorus 67%
Nitrogen 45%
Dissolved Zinc 66%
Dissolved Copper 38%
Total Zinc 69%
Total Copper 50%
Motor Oil 95%


Curb Type Grate Type Vault Type Downspout Type
MWS-L-4-4 MWS-L-4-4 MWS-L-4-4 MWS-L-4-4
MWS-L-4-6 MWS-L-4-6 MWS-L-4-6 MWS-L-4-6
MWS-L-4-8 MWS-L-4-8 MWS-L-4-8 MWS-L-4-8
MWS-L-4-13 MWS-L-4-13 MWS-L-4-13 MWS-L-4-13
MWS-L-4-15 MWS-L-4-15 MWS-L-4-15 MWS-L-4-15
MWS-L-4-17 MWS-L-4-17 MWS-L-4-17 MWS-L-4-17
MWS-L-4-19 MWS-L-4-19 MWS-L-4-19 MWS-L-4-19
MWS-L-4-21 MWS-L-4-21 MWS-L-4-21 MWS-L-4-21
MWS-L-8-8 MWS-L-8-8 MWS-L-8-8 MWS-L-8-8
MWS-L-8-12 MWS-L-8-12 MWS-L-8-12 MWS-L-8-12
MWS-L-8-16 MWS-L-8-16 MWS-L-8-16 MWS-L-8-16


BioMedia Green


BioMediaGREEN is an amazing material changing the way we think of filtration media. […]

Wetland Media


The Modular Wetland Systems utilize a proprietary blend of bioretention media that outperforms standard sand filters, […]