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Cedar Shed Biofilters

An attractive solution for lakefront & difficult sites

Cedar Shed Biofilters have a base constructed of permanent wood foundation board, are spray foam insulated for winter operation, and are clad in attractive, stained, weather sealed cedar wood siding.  Cedar Sheds are designed to work in the most difficult of sites; they are installed above ground to avoid bedrock and high water table problems, and they have the smallest advanced septic system footprint fully approved in Ontario with their compact design and no distribution piping required in the disposal bed.

Cedar Sheds are installed directly on top of a small, shallow Area Bed that easily accepts and disperses the treated Biofilter effluent it receives by gravity.  Cedar Sheds reduce excavation depths, require only a single plumbing connection to hookup onsite, and significantly reduce installation time and complexity.   No electrical components are required at the Cedar Sheds so they can be located away from the house and waterfront.

Cedar Shed Biofilters are the best septic system solution for homeowners wishing to preserve more of their trees and reduce raised mounds.  The only moving part is a single high-quality, energy efficient 1/2 horsepower effluent pump that operates intermittently throughout the day.  Cedar Sheds generally operate in single-pass mode, but can also be modified to operate in recirculation mode for increased nitrogen removal.

Benefits of the Cedar Shed Configuration:

  • Ideal for very small lots
  • Ideal for high water table & bedrock
  • Ideal for preserving trees on the property
  • Sheds are clad in attractive stained cedar siding to blend in with a cottage setting
  • Shallower excavation with no distribution piping required
  • Minimizes mounding on the property
  • Passive air vents fitted with activated charcoal filter to block potential odours


Residential Cedar Shed Biofilter System Overview (click for larger image)

Cedar Shed Biofilter System Overview (click for larger image)


A cedar shed biofilter installed at the site of a large 5-bedroom home.  Locating the biofilter on the corner of the property saved numerous trees.  The owners added their own landscaping touch to the shed before sod was laid down.

A Cedar Shed Biofilter installed a large 5-bedroom home. Locating the Biofilter on the corner of the property saved numerous trees. The homeowners added their own landscaping touches to the Shed before sod was laid down.


This Cedar Shed Biofilter at a lakefront cottage operates in recirculation mode helping to protect the lake from nitrogen contamination.

This Cedar Shed Biofilter at a lakefront cottage operates in recirculation mode helping to protect the lake from nitrogen contamination.

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