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<h4>Water Quantity</h4>
<h4>Water Quantity</h4>
<h4>Water Quality</h4>
<h4>Water Quality</h4>
<p> The [https://www.ontario.ca/laws/regulation/120332 Ontario building code (OBC)] requires only that water collected from rooftops be "free of solids" for irrigation use in an external system such as a rain barrel. </p>
<p> The [https://www.ontario.ca/laws/regulation/120332 Ontario building code (OBC)] requires only that water collected from rooftops be "free of solids" for irrigation use in an external system such as a rain barrel. </p>
<p> There is a draft of [https://www.iccsafe.org/wp-content/uploads/110116-Draft-CSA_ICC-B805-Rainwater-Harvesting.pdf CSA B805 draft] currently under review. The scope of the document includes single family dwellings. But the guide is still under review and may not account for rain barrel systems when officially published.
<p> There is a draft of [https://www.iccsafe.org/wp-content/uploads/110116-Draft-CSA_ICC-B805-Rainwater-Harvesting.pdf CSA B805 draft] currently under review. The scope of the document includes single family dwellings. But the guide is still under review and may not account for rain barrel systems when officially published.
(comments made in reference to draft v. 2, on 1st June 2017).</p>
(comments made in reference to draft v. 2, on 1st June 2017).</p>
<p>Research in a warm climate (Greece) demonstrated that first flush diverters improve the chemical characteristics of the harvested rainwater. However, the use of diverters does not prevent the development of pathogens in stored water[http://www.sciencedirect.com/science/article/pii/S0022169412006993]. </p>
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