Robust, Compact, and Efficient

The ideal septic solution for campgrounds, golf
courses, trailer parks, truck stops, mines, and more


The Waterloo Advantage


Our range of treatment units and add-ons give you the
flexibility to design a system suited to your needs.

Low cost

Low Operating
Cost and

Low energy use

Passive System
with Low
Energy Use

Nutrient Removal


Water reuse


The environmentally friendly choice.

University Of Waterloo

Our technology was developed at the world-renowned University of Waterloo.

We are a pioneer in the industry and continue to lead the way in research and development.

Bureau de Normalisation de Québec Product Certification (BNQ) Logo

Since 1991 the Waterloo Biofilter has proven itself to be the most reliable wastewater treatment system available, and has been tested and proven effective by a number of third party verification programs.

Foam Medium

Permanent Filter Medium

Never needs to be cleaned or replaced.

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

Less moving

Less energy

No noisy air

Energy Usage Comparison Chart


Low 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.

Commercial_Slide6_Drafting@2xDesign and Technical
Assistance Offered

We are proud to lend our years of industry experience to your project engineer or we can recommend an experienced Waterloo Biofilter system designer for you to work with.

Design Assistance

Commercial_Slide7_Grass@2xExcellent Seasonal Use Performance

Absorbent filter medium retains moisture during periods of no use allowing beneficial bacteria to go dormant instead of desiccating or starving. When the system is used again the bacteria population is reactivated and starts degrading contaminants immediately.

Commercial_Slide7_Snowflake@2xExcellent Winter Performance

Achieves and maintains excellent, documented treatment levels even in temperatures down to -50°C, without the need to heat raw sewage.

Tough Enough For Canada

Robust and


Filtration technology recovers more quickly from system abuse (i.e. dead septic tank, chemicals poured into system, etc.) especially when compared to suspended sludge systems

Lowest Long Term
Operating Costs


A permanent filter medium and very low power consumption means your Waterloo Biofilter costs less to operate than any other advanced treatment unit

Consistent Over


Maintains treatment levels over time with no filter medium degradation and no accumulation of aerobic sludge found with other systems

The Waterloo Process

Nature in a Box

The Waterloo Biofilter uses a patented, highly engineered foam filtration medium that is optimized to treat wastewater passively. The foam creates an environment where naturally occurring bacteria can thrive and remove contaminants found in wastewater.

Our system provides both physical filtration and biological treatment of wastewater in one step – ensuring polluting elements are removed before water is returned to the natural environment.

Foam Medium

Step 1:

Wastewater is collected and distributed over the Waterloo foam filter medium.

Foam Medium Bacteria

Step 2:

Wastewater is absorbed by and slowly trickles down through the foam pieces where natural occurring bacteria remove contaminants.

Clean Water from Foam Medium

Step 3:

After passing through the foam, the water is treated and is then put back into the environment.

Thousands of systems installed across North America!


Waterloo has multiple product configurations to meet your needs.

Operation & Maintenance


Regular maintenance of your Waterloo Biofilter system is important to protect the environment and the value of your investment.

Proper operation and maintenance of any type of septic system has a significant impact on how well it works and how long it lasts. Advanced treatment units like the Waterloo Biofilter are often required by regulations to have a valid annual maintenance contract in place. Maintenance is performed by trained and authorized personnel who will inspect all components of your system – not just those components supplied by us.

With few moving parts and only high quality components used, maintenance on a Waterloo Biofilter system can be completed quickly and easily.