Flat Bed Biofilters

Flat Bed Biofilters

Lightweight and blends into landscaping with less excavation

Waterloo Biofilter Flat Beds are constructed of strong yet lightweight shells containing the patented Biofilter filter media. Flat Bed treatment units are modular; additional Flat Beds can be installed in parallel or series to increase the total treatment capacity of the septic system. Wastewater is dosed to the Flat Beds via a small pump chamber with an electric pump. Treated effluent gravity-drains out the bottom of the Flat Beds and flows directly into a disposal bed beneath.

Flat Beds are installed flush to grade and landscaped into the property with the supplied mulch or other porous covering. No distribution piping is required in the disposal bed resulting in a smaller system footprint and faster installation. With their low profile, Flat Beds can be installed in areas of high groundwater or bedrock without destroying the aesthetics of the property.

Flat Beds operate in a single-pass mode. The only moving part is a single high-quality, energy efficient 1/2 horsepower effluent pump that operates intermittently throughout the day.

Product Benefits

Ideal for high water table and bedrock

Ideal for small lots

Lightweight units are ideal for barging to islands and difficult access sites

Shallower excavation with no distribution piping required

System is at-grade and aesthetically landscaped into property

Minimizes tree removal on the property

Minimizes raised mounding on the property

Mulch covered Flat Bed lids block & absorb potential odours


Less moving parts

Less energy

No noisy air compressor


Permanent Filter Medium

Never needs to be cleaned or replaced.

Warrantied for up to 20 years, and will likely last for generations.

Energy Usage Comparison Chart

Commercial_Slide5_LightningBolt@2xLow energy,
low cost.

Waterloo Biofilters use very little energy; up to 85% less power than aeration technologies using air compressors. In the long-term we have the lowest operating costs.

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