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<h3>Plumbing and Regulation </h3>
<h3>Plumbing and Regulation </h3>
The current Ontario Building Code requires that rainwater harvesting systems are designed, constructed and installed to conform to good engineering practice. References are made to ASHRAE, ASPE[https://www.aspe.org/content/arcsaaspeansi-63-2013-rainwater-catchment-systems-electronic-download]  and CSA  [http://shop.csa.ca/en/canada/plumbing-products-and-materials/cancsa-b1281-06b1282-06-r2016/invt/27024892006] guides for plumbing detailing.
The current Ontario Building Code requires that rainwater harvesting systems are designed, constructed and installed to conform to good engineering practice. References are made to ASHRAE, ASPE[https://www.aspe.org/content/arcsaaspeansi-63-2013-rainwater-catchment-systems-electronic-download]  and CSA  [http://shop.csa.ca/en/canada/plumbing-products-and-materials/cancsa-b1281-06b1282-06-r2016/invt/27024892006] guides for plumbing detailing.
These guides focus on ensuring that the rainwater does not contaminate or become mistaken for the municipal drinking water supply. Similarly, rainwater must be prevented from becoming contaminated from the sewer. In both cases, an air gap or a back-flow preventer is required.  
These guides focus on ensuring that the rainwater does not contaminate or become mistaken for the municipal drinking water supply. Similarly, rainwater must be prevented from becoming contaminated from the sewer. In both cases, an air gap or a back-flow preventer is required.
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==Performance==
==Performance==
<h3>Water Quantity</h3>
<h3>Water Quantity</h3>

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