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Home/News & Info Print This Page

Built Green Canada takes step forward in water conservation

Partnership with Green Builder® Coalition brings first performance-based water rating to Canada


November 8, 2018—Built Green Canada has partnered with the Green Builder® Coalition to bring performance-based water efficiency to Canada through its third-party certification programs’ water conservation section.


Though parts of Canada, and the world, are increasingly experiencing droughts, and freshwater ecosystems are shown to be under stress, water conservation in the residential building industry has not received the attention energy efficiency has, though they are both connected and significant; in this respect, the Water Efficiency Rating Score (WERS)® is a step forward.


WERS is based on measurable parameters, along with a scoring scale of zero to 100, zero being the most desirable. Indoor water use considers the main plumbing fixtures of toilets, showers, lavatory and kitchen sinks, clothes washers and structural waste. Those who run the shower for a while before getting hot water are familiar with structural waste: it refers to the amount of water wasted before usable hot water arrives at the furthest hot-water using fixture.


Meanwhile, WERS includes the ability to account for all outdoor water use, as well as reuse via rainwater, greywater and blackwater catchment calculations. Depending on the verified filtration methods for rainwater and greywater, they can be used to offset indoor water use. Additionally, any remaining unused rainwater, greywater and/or blackwater (if applicable) can be credited to potential outdoor use.


“Industry and all orders of government increasingly are focused on the reduction of greenhouse gas emissions (GHGs) and in the residential building sector, the emphasis is on improving the energy performance of buildings,” says Built Green Canada’s chief executive officer Jenifer Christenson. “While energy efficiency is an essential component of sustainable building practices—and our programs—we want to broaden the conversation and shine a light on a more balanced approach that also includes indoor air quality, waste management, and water conservation—some of the key areas of our programs. Despite Canada’s water endowment, we are not immune to water shortages and periods of drought. Moreover, reductions in water usage will save energy, further contributing to the decrease in GHGs.”


Built Green Canada recognizes the pressure on municipalities to supply water to households: managing water demand and financing, building and repairing water infrastructure is a priority. The reduction in water usage can help lessen a number of challenges, including water shortages and increased energy consumption to pump and treat water, pollutants in water bodies, and the expansion of water and wastewater infrastructure. A focus on water conservation helps reduce the load on civic infrastructure: a reduction that can result in a significant financial savings while supporting climate mitigation targets.


“Water shortages and droughts don’t adhere to boundaries, so taking WERS beyond the borders of the United States is a natural progression for the program,” said Mike Collignon, executive director of the Green Builder® Coalition. “I’ve long felt that the policies and incentives that can be linked to WERS are equally applicable, and potentially more essential, outside the United States. We’re excited to partner with Built Green Canada on this journey.”


The WERS tool will be Canadianized in the coming months, verifier training will occur in the spring, and Built Green is encouraging trials through 2019 for its single family, renovation, and high density programs. Builders will earn points toward their BUILT GREEN® home certification, while being able to understand the overall performance of their projects’ water use and make smart choices on the products they incorporate into their builds—and pass-along the associated benefits to their customers.


The BUILT GREEN® Single Family and Renovation programs already utilize Natural Resources Canada’s EnerGuide label, which calculates the build’s energy efficiency and helps builders and homeowners understand how the home’s energy is being used—much like WERS does for water usage.


Built Green Canada is an industry-driven, national, non-profit organization offering third-party certified programs in the residential building sector. Since its inception, builders have worked with Built Green to complete over 31,280 certified homes represented in Alberta, British Columbia, Saskatchewan, and Ontario—including the units in multi-storey projects, the total is over 34,135.


The Green Builder® Coalition is the WERS Program sponsor. The Coalition is a not-for-profit association dedicated to amplifying the voice of green builders and professionals to drive advocacy, information and education for more sustainable home building practices. It is an action-oriented community of green builders and professionals dedicated to uniting and growing their joint expertise, values and voice to create stronger standards for sustainable, more environmentally responsible home building.


For more information:


Jenifer Christenson

Toll Free: 855.485.0920

Email: jchristenson@builtgreencanada.ca

Website: www.builtgreencanada.ca


Mike Collignon

Phone: 618.791.6468

Email: mcollignon@greenbuildercoalition.org

Website: www.greenbuildercoalition.org


The organization offers programs for single family (including Net Zero+), single family renovations, high density (including multi-storey, residential tower, and mixed-use), high density renovation projects,  communities, and a restorations program in pilot. 


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