Modular Wetlands Linear


The Modular Wetlands® Linear is Bio Clean’s flagship stormwater product and represents a pioneering breakthrough in biofiltration. The MWS Linear has superior pollutant removal for total suspended solids (TSS), heavy metals, nutrients, hydrocarbons, and bacteria. With its advanced pretreatment chamber and innovative horizontal flow design, the Modular Wetlands Linear is able to effectively remove pollutants through a combination of physical, chemical, and biological filtration processes.

Also known as: Modular Wetlands® System Linear, Modwet™, or MWS Linear™


  • Horizontal flow biofiltration
  • Greater filter surface area
  • Pretreatment chamber
  • Patented perimeter void area
  • Flow control
  • No depressed planter area
  • Auto draindown means no mosquito vector

Learn More About the Modular Wetlands Linear

Our local stormwater experts come to you!

The Modular Wetlands Linear, often considered the most trusted standard for stormwater compliance, uses a smaller footprint yet provides more treatment surface area. It is the only stormwater biofilter using horizontal flow which improves performance and minimizes maintenance. Request a Lunch & Learn today, and get regionally-focused insight and solutions from a local Bio Clean stormwater expert.


Washington State Department of Ecology

Virginia Department of Environmental Quality

Massachusetts Stormwater Technology Evaluation Project

Rhode Island Department of Environmental Management

Texas Commission on Environmental Quality

California State Water Resources Control Board

Maryland Department of the Environment – Environmental Site Design (ESD)

Atlanta Regional Commission


Modular Wetlands Linear has been successfully used on numerous new construction and retrofit projects. The system’s
superior versatility makes it beneficial for a wide range of stormwater and waste water applications.

Industrial Sites

Parking Lots
Mixed Use

Low Impact Development
Waste Water


Total Suspended Solids (TSS) 85%
Total Phosphorus 64%
Ortho Phosphorus 67%
Motor Oil 95%

Maintenance and Installation

Installation Manual
Maintenance Manual


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

The Modular Wetlands Linear utilizes a proprietary blend of bioretention media that outperforms standard sand filters, […]