Posts Tagged ‘graywater systems’

Product Knowledge Forum – Innovative Ontario Solutions for Energy and Environmental Performance

May 4th, 2016

SBC_logoPlease join us on Wednesday May 18, 2016 at 6:30 p.m. in the Steam Whistle Gallery for an exciting series of presentations and informal discussions featuring Ontario-based products and solutions. This forum will feature innovative approaches to radon control, energy storage, heat recovery, wall systems, and water re-use. The presentations will be followed by a cocktail and networking reception catered by Steam Whistle Brewing and Daniel et Daniel.

The featured products include: Vertical Indoor Garden (VIGA), SolarWall, Greyter Water Systems, RadonGuard, and Quad Lock Insulated Concrete Formwork technologies.

We look forward to welcoming our expert presenters Mr. Phil Fung, Mr. Todd Marron, Mr. John Bell, Mr. Richard Baumgartner, and Mr. Shawn Eldebs

Please visit our Eventbrite page to register – Cost is $47.46 to attend.

Visit Sustainable Buildings Canada for more information.

Rainwater HOG — Rainwater harvesting made simple

October 21st, 2010

Rainwater HOG

In Australia, where the country has been plagued by drought for years, it’s mandatory to recycle rainwater. So, it should come as no surprise that an ingenious method of rainwater harvesting was invented there,  and is now distributed worldwide — including right here in Ontario.

The developer of the Rainwater HOG, Sally Dominguez, an architectural practitioner, was searching for a system that would allow her to store rainwater under decks and patios. For many of us in urban centres, Sally recognized that space was at a premium and underground cisterns can be a challenge to install after a house has been built, while rain barrels either don’t capture enough water, or take up too much room. Sally was told by tank salespeople that it wasn’t possible to put rainwater harvesting tanks under her deck because they wouldn’t work horizontally — so she set out to prove them wrong and designed a system that works horizontally or vertically and can be added on to as your needs (and/or budget) change.

The Rainwater HOG consists of one or many tanks that can be attached to each other. Their slim lines mean that they can be attached to walls or fences or stored under unused areas such as decks. I spoke with Denis Orendt of, the distributor of the product in Ontario, to ask if a pump was necessary for use. He said it all depended on system’s intended use and where the tanks were located, but they can work either by gravity or with a pump; each situations is different. Uses for the tanks vary from greenhouse water, to agricultural uses, to watering your garden. If incorporated into a home’s design early enough in the process they can also be used to capture grey water from showers and sinks for reuse in toilets. The units are slim enough at 20″ to be nestled in between studs built 24″ apart.

Dimensions: Each tank holds 50 gallons/189 litres, can be attached to a wall and added to over time, or stored horizontally under decks. Each module is 9 1/2″ x 20″ x 71″  and weighs 44 lbs when empty and about 440 lbs when full.

Material: The Hog is made from food grade polyethylene plastic which has been approved for storing potable (drinkable) water by the FDA in the US. However, it is NOT recommended to drink water stored in these tanks unless further treated with a UV system or reverse osmosis or other approved water treatment system. Toxic metals in roofing materials and animal waste can contaminate rainwater run-off.


Not sure what the system can do for your water consumption?

  • 2 HOGs full of rainwater can  irrigate a 140sq ft garden year round or provide 25 days emergency water for 4 people
  • 6 HOGs could rain-flush a 2 person household all year
  • 6 HOGs could run a front load washer all year for a 4-person household (the PH of rainwater is gentle on clothes).

Retail cost: $350 per module plus the installation kit. Installation not included in the price.

For more information contact Denis Orendt (Ontario/Eastern Canada Distributor):

RSS Systems ON Inc.:

PO Box 832, Cobourg ON, K9A 4S3

Phone: 1-844-391-5753


For distribution in western Canada visit the H2OG website:–buy-hogs.html


Brac Residential Graywater Systems Can Conserve Up to 40% of Your Water Use

May 25th, 2010

If you’re not familiar with the term “graywater,” it refers to water that has been used once for showers or laundry and can be used again for filling toilets, (and sometimes watering lawns as well). Some systems will also take water from sump pumps that can be pumped into a recovery tank. The point about reusing water is that it prevents the use of “potable” (treated, drinking) water for being used for things like flushing toilets. In an average family household, the largest water consumption activities are:

  • Showers and baths: 35%
  • Toilet flushing: 30%
  • Laundry: 20%
  • Kitchen and drinking: 10%
  • Cleaning: 5%

Many of the municipalities around the Greater Toronto Area are looking to reduce water consumption. As more people move into the GTA, more pressure is put on our water system. If we can reduce water use we can delay infrastructure upgrades, save energy costs (water treatment costs), and most importantly, conserve fresh water use.

Enter the graywater system. A graywater system can conserve 35-40% of your water consumption by taking all water used from showers and baths and direct it to fill you toilet bowls, thereby displacing 30% of your total household water consumption. In fact, at current water rates, Chris Thompson of Project Innovations,  estimates that a homeowner would save 30-40% on their water bill annually with a graywater system.

How a graywater system works (courtesy of Project Innovations)

Graywater diagram --courtesy of Chris Thompson, Project Innovations

After going through a second use in toilets, the water is then flushed into the main sewage system.

In addition to the advantages already mentioned, there are a few others as well::

  • It is not dependent on rainwater.
  • It can be used with low-flow toilets and showers.
  • It means that potable (treated, drinking) water is not used for flushing toilets.
  • It eases the burden on the city sewage treatment system.

The main drawbacks of a greywater system:

  • Retrofitting an already built home is difficult unless a renovation is being undertaken.
  • The tank requires a certain amount of space in your basement.

I contacted Chris to ask him a few questions about a graywater system:

1. How much does a system usually cost and what does the cost include? (design, installation of pipes, and tank?).
[Chris Thompson] Systems start at $2190 for a modest sized home with a typical family. Installation varies depending on the home. For new construction or renovations where there is already some plumbing work being done or simple retrofits where the plumbing is exposed or easy to get to, the installation cost ranges from $300-$800 including materials. This would include all of the rough in materials (pipes), valves and fittings and labour required.
2. Do you take care of the design and installation for single family homes or do you work only with developments?
[Chris Thompson] I or one of my dealers would provide support to the plumber who would do the rough in and make the system connections. This is mainly a plumbing job and it must be done to comply with Ontario Building Code. Most plumbers need only a little bit of guidance from us to be able to do the installation. The dealer can also provide start-up and an orientation for the homeowner if required.
3. Is Brac the only residential greywater system available in Canada? Are you the sole distributor in Ontario?
[Chris Thompson] Brac is currently the only approved residential system in Ontario and yes, I am building the dealer network for the province now.
4. If you are completely renovating a house, as in tearing back to the studs, can you install a system?
[Chris Thompson] That would be the simplest of all installations. 
5. Does it work with low-flow showers, toilets and water efficient washing machines and dishwashers?
[Chris Thompson] With a Brac System, there is no need to upgrade beyond 6l toilets as all of the water will be reclaimed and 6L toilets will become 0L toilets.  Having said that, dual flush or low flush toilets will increase the capacity of the system. ie. The RGW150 is ideal for a family of 4. With dual flush toilets, it would be more capable of handling 6 occupants.

Most of the good low flow shower heads restrict water to about 7 litres per minute (much less and people tend to shower longer and don’t get a comfortable shower). With an average shower length of 10 minutes, 70L of greywater would be reclaimed. On average, we flush 7 times per day per person or 42L with 6L toilets. This means there will usually be a surplus, even with low flow shower heads.

Because there is a surplus, we typically do not connect the laundry because we already have enough water. In some installations, it is difficult to get to all of the showers and we might tie in the laundry to supplement. The impact is that lint will need to be cleaned from the filter more often and colour will get through the filter.

We never collect from kitchen sources due to the organics and oils that are present.

6. You mention on your website that some municipalities are thinking of offering incentives for installation, are there any that you know of that do that in Ontario?
[Chris Thompson] Guelph is the first. They are just finishing up a pilot rebate that was to cover the first 30 systems installed in new construction through selected builders. They are in the process now of implementing a permanent rebate of $1000 for anybody who wants to install a system. When all of this becomes final, I will be approaching other municipalities with the details.
For more information on residential (or commercial) graywater systems, contact Chris Thompson at Project Innovations (formerly The Install Team).
phone: 705-734-6258
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