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Articles

Water Reuse and Recycling in Canada: A Status and Needs Assessment

Pages 195-208 | Published online: 23 Jan 2013
 

Abstract

The Canadian experience with water reuse and recycling is reviewed under five theme areas: technology; policy and regulation; research; public acceptance; and coordination. At present, water reuse and recycling in Canada is practiced on a relatively small scale and varies regionally depending on the availability of water supplies and regulatory flexibility. Typical examples include using treated municipal wastewater to irrigate agricultural nonfood crops, urban parkland, landscaping and golf courses. Water recycling also exists in select industrial sectors and experimental greywater treatment and reuse for toilet flushing, irrigation or other nonpotable uses at the scale of individual buildings. Recommendations for further action are presented from a recent national experts workshop on water reuse. The interest in reuse will likely increase, driven to a large extent by steadily increasing water demands, conflict among users and opportunities to save on future expansion of water supply infrastructure.

L'exprience canadienne quant la rutilisation et au recyclage de l'eau est examine la lumire de cinq aspects thmatiques : technologie; politique et rglementation, recherche, acceptation par le public et coordination. l'heure actuelle, la rutilisation et le recyclage de l'eau au Canada se font une chelle relativement petite et varient d'une rgion l'autre selon la disponibilit des rserves d'eau et la souplesse des rglements. Par exemple, les eaux uses traites par les municipalits peuvent servir irriguer les cultures non alimentaires, les parcs urbains, les amnagements paysagers et les terrains de golf. Le recyclage de l'eau se fait galement dans certains secteurs industriels et on le retrouve dans le traitement exprimental des eaux mnagres, la rutilisation pour la chasse d'eau, l'irrigation et d'autres usages non potables l'chelle des immeubles pris individuellement. Des recommandations de mesures supplmentaires sont prsentes. Elles dcoulent d'un atelier national ayant regroup rcemment des experts en matire de rutilisation de l'eau. L'intrt face la rutilisation augmentera sans doute, en grande partie du fait des demandes en eau qui ne cessent de s'accrotre, des diffrends entre utilisateurs et des occasions de raliser des conomies lies l'expansion de l'infrastructure d'approvisionnement en eau.

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