{"id":4560,"date":"2026-10-06T11:00:06","date_gmt":"2026-10-06T15:00:06","guid":{"rendered":"https:\/\/backflow-shop.com\/?p=4560"},"modified":"2026-10-06T11:00:06","modified_gmt":"2026-10-06T15:00:06","slug":"when-should-a-backflow-prevention-device-be-installed","status":"publish","type":"post","link":"https:\/\/backflow-shop.com\/en\/when-should-a-backflow-prevention-device-be-installed\/","title":{"rendered":"When should a Backflow Prevention Device be installed?"},"content":{"rendered":"<p><span data-contrast=\"auto\">The importance of protecting drinking water from contamination is well known, yet some sources of pollution are less obvious than one might think. Did you know, for example, that a simple garden hose left submerged in a swimming pool can pose a risk of contaminating the drinking water? It is to prevent this type of situation that backflow prevention devices (BPDs) play an essential role.<\/span><span data-ccp-props=\"{&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<h3><b><span data-contrast=\"auto\">What is a BPD?<\/span><\/b><span data-ccp-props=\"{&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/h3>\n<p><span data-contrast=\"auto\">A backflow prevention device, as its name suggests, is a device designed to prevent water from flowing in the opposite direction of its normal flow, a phenomenon known as backflow. It therefore protects the drinking water system against the risks of contamination.<\/span><span data-ccp-props=\"{&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter wp-image-4534 size-large\" src=\"https:\/\/backflow-shop.com\/wp-content\/uploads\/2026\/09\/Copie-de-whats-in-bag-bfs-e1790611871950.png\" alt=\"Cette image pr\u00e9sente un DAr2CR.\" width=\"800\" height=\"298\" srcset=\"https:\/\/backflow-shop.com\/wp-content\/uploads\/2026\/09\/Copie-de-whats-in-bag-bfs-e1790611871950.png 1300w, https:\/\/backflow-shop.com\/wp-content\/uploads\/2026\/09\/Copie-de-whats-in-bag-bfs-e1790611871950-300x112.png 300w, https:\/\/backflow-shop.com\/wp-content\/uploads\/2026\/09\/Copie-de-whats-in-bag-bfs-e1790611871950-1024x382.png 1024w, https:\/\/backflow-shop.com\/wp-content\/uploads\/2026\/09\/Copie-de-whats-in-bag-bfs-e1790611871950-768x287.png 768w, https:\/\/backflow-shop.com\/wp-content\/uploads\/2026\/09\/Copie-de-whats-in-bag-bfs-e1790611871950-600x224.png 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h3><b><span data-contrast=\"auto\">In which situations is a BPD necessary?<\/span><\/b><span data-ccp-props=\"{&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/h3>\n<p><span data-contrast=\"auto\">The presence of a BPD at the water entry inlet is essential. However, the need to install one depends on several factors, specifically the type of building, its level of risk, and the potential sources of pollution or contamination present.<\/span><\/p>\n<ul>\n<li>\n<h4><strong>Buildings covered:<img decoding=\"async\" class=\"size-medium wp-image-4526 alignright\" src=\"https:\/\/backflow-shop.com\/wp-content\/uploads\/2026\/09\/image.jpg-300x197.jpg\" alt=\"B\u00e2timent industriel \" width=\"300\" height=\"197\" srcset=\"https:\/\/backflow-shop.com\/wp-content\/uploads\/2026\/09\/image.jpg-300x197.jpg 300w, https:\/\/backflow-shop.com\/wp-content\/uploads\/2026\/09\/image.jpg.jpg 313w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/strong><\/h4>\n<ul>\n<li>Commercial buildings<\/li>\n<li>Industrial buildings<\/li>\n<li>Institutional buildings<\/li>\n<li>Existing residential buildings*<br \/>\n<h4><\/h4>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><em><span class=\"TextRun SCXW5902476 BCX0\" lang=\"EN-CA\" xml:lang=\"EN-CA\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW5902476 BCX0\">*<\/span><\/span><span class=\"TextRun SCXW5902476 BCX0\" lang=\"EN-CA\" xml:lang=\"EN-CA\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW5902476 BCX0\">Building-level protection is not <\/span><span class=\"NormalTextRun SCXW5902476 BCX0\">required<\/span><span class=\"NormalTextRun SCXW5902476 BCX0\"> for fully residential buildings with fewer than 9 dwelling units <\/span><\/span><span class=\"TextRun SCXW5902476 BCX0\" lang=\"EN-CA\" xml:lang=\"EN-CA\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW5902476 BCX0\">or<\/span><\/span><span class=\"TextRun SCXW5902476 BCX0\" lang=\"EN-CA\" xml:lang=\"EN-CA\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW5902476 BCX0\"> fewer than 3 stories. However,\u00a0<\/span><\/span><\/em><em><span class=\"TextRun SCXW5902476 BCX0\" lang=\"EN-CA\" xml:lang=\"EN-CA\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW5902476 BCX0\">this does not mean that a specific piece of equipment cannot <\/span><\/span><\/em><em><span class=\"TextRun SCXW5902476 BCX0\" lang=\"EN-CA\" xml:lang=\"EN-CA\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW5902476 BCX0\">require its own backflow protection.<\/span><\/span><span class=\"EOP Selected SCXW5902476 BCX0\" data-ccp-props=\"{&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/em><\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"4\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"2\" data-aria-level=\"1\">\n<h4><b><span data-contrast=\"auto\">Building risk level<\/span><\/b><\/h4>\n<\/li>\n<\/ul>\n<p><span class=\"TextRun SCXW53366110 BCX0\" lang=\"EN-CA\" xml:lang=\"EN-CA\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW53366110 BCX0\">C<\/span><span class=\"NormalTextRun SCXW53366110 BCX0\">lassification depends on the actual use of the building and the activities <\/span><span class=\"NormalTextRun SCXW53366110 BCX0\">conducted within it<\/span><span class=\"NormalTextRun SCXW53366110 BCX0\">. Here are some examples of buildings <\/span><span class=\"NormalTextRun SCXW53366110 BCX0\">based on<\/span><span class=\"NormalTextRun SCXW53366110 BCX0\"> their<\/span> <span class=\"NormalTextRun SCXW53366110 BCX0\">level of <\/span><span class=\"NormalTextRun SCXW53366110 BCX0\">risk<\/span><span class=\"NormalTextRun SCXW53366110 BCX0\">:<\/span><\/span><span class=\"EOP Selected SCXW53366110 BCX0\" data-ccp-props=\"{&quot;335559685&quot;:567,&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"o\" data-font=\"Courier New\" data-listid=\"4\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1440,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Courier New&quot;,&quot;469769242&quot;:[9675],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;o&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"2\"><b><span data-contrast=\"auto\">High risk<\/span><\/b><span data-contrast=\"auto\">: <span class=\"NormalTextRun SCXW216780606 BCX0\">airports, hospitals, laboratories, car washes, research <\/span><span class=\"NormalTextRun SCXW216780606 BCX0\">facilitie<\/span><span class=\"NormalTextRun SCXW216780606 BCX0\">s, and <\/span><span class=\"NormalTextRun SCXW216780606 BCX0\">various <\/span><span class=\"NormalTextRun SCXW216780606 BCX0\">types<\/span><span class=\"NormalTextRun SCXW216780606 BCX0\"> of factories<\/span><span class=\"NormalTextRun SCXW216780606 BCX0\">,<\/span><\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"o\" data-font=\"Courier New\" data-listid=\"4\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1440,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Courier New&quot;,&quot;469769242&quot;:[9675],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;o&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"2\" data-aria-level=\"2\"><b><span data-contrast=\"auto\">Moderate risk<\/span><\/b><span data-contrast=\"auto\">\u202f: r<span class=\"NormalTextRun SCXW59854035 BCX0\">estaurants, hotels\/motels, office buildings, water parks, swimming pools, hair salons\/barbershops\/beauty <\/span><span class=\"NormalTextRun SCXW59854035 BCX0\">salons<\/span><span class=\"NormalTextRun SCXW59854035 BCX0\">,<\/span><\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"o\" data-font=\"Courier New\" data-listid=\"4\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1440,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Courier New&quot;,&quot;469769242&quot;:[9675],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;o&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"3\" data-aria-level=\"2\"><b><span data-contrast=\"auto\">Low risk<\/span><\/b><span data-contrast=\"auto\">\u202f: <span class=\"NormalTextRun SCXW87868345 BCX0\">residential premises, <\/span><span class=\"NormalTextRun SCXW87868345 BCX0\">rectories<\/span><span class=\"NormalTextRun SCXW87868345 BCX0\">.<\/span><\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li style=\"list-style-type: none;\"><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span class=\"TextRun SCXW12334460 BCX0\" lang=\"EN-CA\" xml:lang=\"EN-CA\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW12334460 BCX0\">The <\/span><span class=\"NormalTextRun SCXW12334460 BCX0\">risk <\/span><span class=\"NormalTextRun SCXW12334460 BCX0\">level <\/span><span class=\"NormalTextRun SCXW12334460 BCX0\">determine<\/span><span class=\"NormalTextRun SCXW12334460 BCX0\">s<\/span><span class=\"NormalTextRun SCXW12334460 BCX0\"> the <\/span><span class=\"NormalTextRun SCXW12334460 BCX0\">appropriate backflow<\/span><span class=\"NormalTextRun SCXW12334460 BCX0\"> prevent<\/span><span class=\"NormalTextRun SCXW12334460 BCX0\">ion device<\/span><span class=\"NormalTextRun SCXW12334460 BCX0\"> to be used<\/span><span class=\"NormalTextRun SCXW12334460 BCX0\">.<\/span><\/span><span class=\"EOP Selected SCXW12334460 BCX0\" data-ccp-props=\"{&quot;335559685&quot;:567,&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"4\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"3\" data-aria-level=\"1\">\n<h4><b><span data-contrast=\"auto\">Potential sources of pollution or contamination<\/span><\/b><\/h4>\n<\/li>\n<\/ul>\n<p><span class=\"TextRun SCXW59906301 BCX0\" lang=\"EN-CA\" xml:lang=\"EN-CA\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW59906301 BCX0\">Certain equipment connected to the drinking water <\/span><span class=\"NormalTextRun SCXW59906301 BCX0\">system<\/span> <span class=\"NormalTextRun SCXW59906301 BCX0\">may<\/span> <span class=\"NormalTextRun SCXW59906301 BCX0\">pose<\/span><span class=\"NormalTextRun SCXW59906301 BCX0\"> a potential source of pollution or <a href=\"https:\/\/backflow-shop.com\/en\/contaminants-in-water-the-5-most-important\/\" target=\"_blank\" rel=\"noopener\">contamination<\/a> and <\/span><span class=\"NormalTextRun SCXW59906301 BCX0\">may <\/span><span class=\"NormalTextRun SCXW59906301 BCX0\">require <\/span><span class=\"NormalTextRun SCXW59906301 BCX0\">appropriate backflow<\/span><span class=\"NormalTextRun SCXW59906301 BCX0\"> protection. Here are a few examples of potential sources of contamination:<\/span><\/span><span class=\"EOP Selected SCXW59906301 BCX0\" data-ccp-props=\"{&quot;335559685&quot;:567,&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"o\" data-font=\"Courier New\" data-listid=\"4\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1440,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Courier New&quot;,&quot;469769242&quot;:[9675],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;o&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"2\"><span data-contrast=\"auto\">Bathtubs (all types),<\/span><span data-ccp-props=\"{&quot;335559685&quot;:1134,&quot;335559991&quot;:283}\">\u00a0<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"o\" data-font=\"Courier New\" data-listid=\"4\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1440,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Courier New&quot;,&quot;469769242&quot;:[9675],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;o&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"2\" data-aria-level=\"2\"><span data-contrast=\"auto\">Swimming pools (direct connection),<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"o\" data-font=\"Courier New\" data-listid=\"4\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1440,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Courier New&quot;,&quot;469769242&quot;:[9675],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;o&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"3\" data-aria-level=\"2\"><span data-contrast=\"auto\">Irrigation systems,<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"o\" data-font=\"Courier New\" data-listid=\"4\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1440,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Courier New&quot;,&quot;469769242&quot;:[9675],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;o&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"4\" data-aria-level=\"2\"><span data-contrast=\"auto\">Humidifiers,<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"o\" data-font=\"Courier New\" data-listid=\"4\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1440,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Courier New&quot;,&quot;469769242&quot;:[9675],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;o&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"5\" data-aria-level=\"2\"><span data-contrast=\"auto\">Chemical dispensers,<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"o\" data-font=\"Courier New\" data-listid=\"4\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1440,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Courier New&quot;,&quot;469769242&quot;:[9675],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;o&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"6\" data-aria-level=\"2\"><span data-contrast=\"auto\">Utility basins,<\/span><span data-ccp-props=\"{&quot;335559685&quot;:1134,&quot;335559991&quot;:283}\">\u00a0<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"o\" data-font=\"Courier New\" data-listid=\"4\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1440,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Courier New&quot;,&quot;469769242&quot;:[9675],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;o&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"7\" data-aria-level=\"2\"><span data-contrast=\"auto\">Laboratory faucets,<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"o\" data-font=\"Courier New\" data-listid=\"4\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1440,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Courier New&quot;,&quot;469769242&quot;:[9675],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;o&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"8\" data-aria-level=\"2\"><span data-contrast=\"auto\">Dental cleaning equipment (veterinary type),<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"o\" data-font=\"Courier New\" data-listid=\"4\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1440,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Courier New&quot;,&quot;469769242&quot;:[9675],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;o&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"9\" data-aria-level=\"2\"><span data-contrast=\"auto\">Toilets (tank type).<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><img decoding=\"async\" class=\"wp-image-4554 aligncenter\" src=\"https:\/\/backflow-shop.com\/wp-content\/uploads\/2026\/09\/Image-Marly-1-300x182.jpg\" alt=\"This diagram represents the risks of cross-connections\" width=\"613\" height=\"372\" srcset=\"https:\/\/backflow-shop.com\/wp-content\/uploads\/2026\/09\/Image-Marly-1-300x182.jpg 300w, https:\/\/backflow-shop.com\/wp-content\/uploads\/2026\/09\/Image-Marly-1-1024x621.jpg 1024w, https:\/\/backflow-shop.com\/wp-content\/uploads\/2026\/09\/Image-Marly-1-768x466.jpg 768w, https:\/\/backflow-shop.com\/wp-content\/uploads\/2026\/09\/Image-Marly-1-600x364.jpg 600w, https:\/\/backflow-shop.com\/wp-content\/uploads\/2026\/09\/Image-Marly-1.jpg 1300w\" sizes=\"(max-width: 613px) 100vw, 613px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p><span data-contrast=\"auto\">The need for a BPD therefore depends not only on the type of building, but also on the equipment and potential sources of pollution or contamination present.<\/span><span data-ccp-props=\"{&quot;335559685&quot;:567,&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">These examples do not constitute an exhaustive list. For more information on building types, associated risk levels, and potential sources of pollution or contamination, consult the CSA B64.10:23 standard as well as the Guide on Backflow Preventers from the R\u00e9gie du b\u00e2timent du Qu\u00e9bec (RBQ).<\/span><span data-ccp-props=\"{&quot;335559685&quot;:567,&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<h5>Article written by: Marly Ghattas<\/h5>\n<p>&nbsp;<\/p>\n<h4><span data-contrast=\"auto\">References<\/span><\/h4>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"4\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"4\" data-aria-level=\"1\"><a href=\"https:\/\/www.rbq.gouv.qc.ca\/vous-etes\/proprietaire-ou-exploitant\/les-exigences-de-qualite-et-de-securite\/dispositif-antirefoulement\/\" target=\"_blank\" rel=\"noopener\"><span data-contrast=\"none\">https:\/\/www.rbq.gouv.qc.ca\/vous-etes\/proprietaire-ou-exploitant\/les-exigences-de-qualite-et-de-securite\/dispositif-antirefoulement\/<\/span><\/a><\/li>\n<\/ul>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"4\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"5\" data-aria-level=\"1\"><a href=\"https:\/\/www.rbq.gouv.qc.ca\/fileadmin\/medias\/pdf\/Publications\/francais\/guide-dar-protection-reseau-eau-potable.pdf\" target=\"_blank\" rel=\"noopener\"><span data-contrast=\"none\">https:\/\/www.rbq.gouv.qc.ca\/fileadmin\/medias\/pdf\/Publications\/francais\/guide-dar-protection-reseau-eau-potable.pdf<\/span><\/a><\/li>\n<\/ul>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"4\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"6\" data-aria-level=\"1\"><span class=\"TextRun SCXW257030111 BCX0\" lang=\"EN-CA\" xml:lang=\"EN-CA\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW257030111 BCX0\">CSA B64.10:23, <\/span><span class=\"NormalTextRun SCXW257030111 BCX0\">S<\/span><span class=\"NormalTextRun SCXW257030111 BCX0\">e<\/span><span class=\"NormalTextRun SCXW257030111 BCX0\">lection<\/span><span class=\"NormalTextRun SCXW257030111 BCX0\"> et installation <\/span><span class=\"NormalTextRun SCXW257030111 BCX0\">of backflow<\/span><span class=\"NormalTextRun SCXW257030111 BCX0\"> preventers<\/span><\/span><span class=\"EOP Selected SCXW257030111 BCX0\" data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:278}\">\u00a0<\/span><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>The importance of protecting drinking water from contamination is well known, yet some sources of pollution are less obvious than one might think. Did you know, for example, that a simple garden hose left submerged in a swimming pool can pose a risk of contaminating the drinking water? It is to prevent this type of [&hellip;]<\/p>\n","protected":false},"author":23,"featured_media":4526,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[60,58],"tags":[],"class_list":["post-4560","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-products","category-tips"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>When should a Backflow Prevention Device be installed? - Backflo Shop<\/title>\n<meta name=\"description\" content=\"The backflow prevention device (BPD). 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