{"id":1093026,"date":"2025-07-23T09:35:58","date_gmt":"2025-07-23T08:35:58","guid":{"rendered":"https:\/\/hydrokube.be\/lien_durete_calcaire\/"},"modified":"2025-07-23T09:36:00","modified_gmt":"2025-07-23T08:36:00","slug":"lien_durete_calcaire","status":"publish","type":"post","link":"https:\/\/hydrokube.be\/en\/lien_durete_calcaire\/","title":{"rendered":"Link Between Water Hardness and Limescale"},"content":{"rendered":"<p>[et_pb_section admin_label=&#8221;section&#8221;]<br \/>\n\t\t\t[et_pb_row admin_label=&#8221;row&#8221;]<br \/>\n\t\t\t\t[et_pb_column type=&#8221;4_4&#8243;][et_pb_text admin_label=&#8221;Text&#8221;]We will explain water hardness and then verify the link between hardness and limescale. Finally, how to know the hardness of your water and, if necessary, how to combat limescale? <\/p>\n<h2>What is Water Hardness?<\/h2>\n<p>Water hardness <strong>corresponds to the concentration of magnesium and calcium contained in the water.<\/strong> The concentration is measured by what is called the hydrotimetric title (TH). This hydrotimetric title is expressed either in French degrees and is represented by the symbol \u00b0f or \u00b0fH. It should be known that 1 \u00b0f corresponds to:  <\/p>\n<ul>\n<li>4 mg\/l of calcium<\/li>\n<li>2.43 mg\/l of magnesium<\/li>\n<li>10 mg\/l of calcium carbonate<\/li>\n<\/ul>\n<p>When <strong>water is said to be &#8220;hard&#8221;<\/strong>, it means that it contains <strong>a high level of magnesium salts and calcium salts<\/strong>. If the water has the necessary reactants, these salts crystallize and form hard, compact residues, commonly called &#8220;limescale&#8221; or &#8220;scale&#8221;. Therefore, water with a hardness of 30 \u00b0f has 120 mg\/l of calcium or 72.9 mg\/l of magnesium and much more limescale. It has 300 mg\/l of calcium carbonate or limescale!   <\/p>\n<h2>What is the Link Between Limescale and Hardness<\/h2>\n<p>There&#8217;s a link, of course. To understand the link, we must first understand what limescale is.<\/p>\n<p><strong>Limescale<\/strong> is calcium carbonate (CaCO<sub>3<\/sub>) plus magnesium carbonate (MgCO<sub>3<\/sub>). In chemical terms, it&#8217;s a mixture of calcium ion (Ca<sup>++<\/sup>) and carbonate ion with carbon oxide (CO<sup>&#8212;<\/sup>). The final molecule is thus composed of calcium ions (positively charged) and carbonate ions (negatively charged) to form CaCO<sub>3<\/sub>.   Magnesium is present in smaller quantities and, for simplicity&#8217;s sake, is often omitted from explanations.<\/p>\n<p><strong>Hardness<\/strong> therefore corresponds to the water&#8217;s content of calcium and magnesium. Consequently, the more it contains, the harder it is said to be. Tap water generally has a lot of calcium and little CO<sub>2<\/sub>. The water will be calcareous and can scale your home. <strong>But this water can be hard without being scaling in nature!<\/strong> Indeed, if <strong>the water is rich in CO<sub>2<\/sub>, the water will tend to dissolve the limescale to transform it into bicarbonate.<\/strong> <strong>In this case, the water hardness measurement will not be representative of the water&#8217;s scaling character!<\/strong> It will simply be an indication of the presence of calcium and magnesium in the water (<a href=\"https:\/\/hydrokube.be\/en\/co2-for-fighting-limestone\/\">See the explanation in &#8216;How can CO2 help combat limescale?&#8217;<\/a>)   <\/p>\n<h2>What is the Hardness of My Water?<\/h2>\n<p>If you observe whitish, encrusted traces in the kettle, on dishes and sanitary equipment, or if soap lathers poorly, skin is dry after showering, laundry remains stiff or hard,&#8230; then it is very likely that your water is hard.<br \/>\nIt should be known that in Belgium, most tap water is hard. This degree can vary considerably depending on location. And you can consult online the results of official analyses carried out by water distributors such as Vivaqua, IBWE, De Watergroep or on your water bill.  <\/p>\n<p>Also, it is possible to find kits designed to measure water hardness. These kits are available in aquarium stores, DIY stores, or online. <\/p>\n<h2>Combating Limescale?<\/h2>\n<p>Chemical water softeners are an increasingly popular effective method of water treatment. While some still turn to traditional salt models today, know that there is a new generation of devices using CO2 injection. Moreover, they are ecological, economical, and just as, if not more effective than traditional water softeners. (<a href=\"https:\/\/hydrokube.be\/en\/co2-for-fighting-limestone\/\">See the explanation in &#8216;How can CO2 help combat limescale?&#8217;<\/a>)<\/p>\n<h2>Salt or CO<sub>2<\/sub>?<\/h2>\n<h3>Salt treatment,<\/h3>\n<p>The very first solution, invented over 80 years ago. The treatment proceeds by replacing calcium and magnesium with sodium.  Thus, calcium carbonate CaCO<sub>3<\/sub> becomes sodium carbonate NaCO<sub>3<\/sub>. Therefore, to lower the hardness from 37\u00b0f to 12\u00b0f, there will be 212.5 mg\/l of sodium in your water (2.12 grams\/l).<br \/>\nIt&#8217;s easy to see why you need to be careful with a salt water softener, not only for health reasons, but also to prevent metal corrosion. To avoid bacterial proliferation, the resin must be regenerated regularly. Also, the salt must be stored in hygienic conditions and not be transferred by hand. Furthermore, the brine tank must be disinfected at least once a year. Finally, the device must be connected to the sewer.  <\/p>\n<h3>A CO<sub>2<\/sub> Treatment<\/h3>\n<p>This is the solution that is gaining increasing success. Not only is this solution much more economical to use, but it&#8217;s also truly environmentally friendly. Finally, it&#8217;s very simple to use. You just need to plan to change the CO<sub>2<\/sub> bottle about once a year or after 120 m<sup>3<\/sup>. CO<sub>2<\/sub> injection offers you several advantages. First and foremost, this solution effectively treats limescale. Furthermore, <strong>the treatment by CO<sub>2<\/sub> injection preserves calcium and magnesium in the water<\/strong>. Water rich in calcium and magnesium covers a third of human calcium and magnesium needs. Calcium would provide protection not only against cardiovascular diseases but also for bone strengthening. It is necessary for muscle function, blood clotting process&#8230; As you can see, we are often too hard on limescale.         [\/et_pb_text][\/et_pb_column]<br \/>\n\t\t\t[\/et_pb_row]<br \/>\n\t\t[\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>We will explain water hardness and then verify the link between hardness and limescale. Finally, how to know the hardness of your water and, if necessary, how to combat limescale? What is Water Hardness? Water hardness corresponds to the concentration of magnesium and calcium contained in the water. The concentration is measured by what is [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","content-type":"","footnotes":""},"categories":[201],"tags":[],"class_list":["post-1093026","post","type-post","status-publish","format-standard","hentry","category-faq-en"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Link Between Water Hardness and Limescale - Hydrokube<\/title>\n<meta name=\"description\" content=\"Water hardness corresponds to the concentration of magnesium and calcium contained in water. It generally has a lot of calcium and little CO2, and will be calcareous and therefore scaling.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hydrokube.be\/en\/lien_durete_calcaire\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Link Between Water Hardness and Limescale - Hydrokube\" \/>\n<meta property=\"og:description\" content=\"Water hardness corresponds to the concentration of magnesium and calcium contained in water. It generally has a lot of calcium and little CO2, and will be calcareous and therefore scaling.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/hydrokube.be\/en\/lien_durete_calcaire\/\" \/>\n<meta property=\"og:site_name\" content=\"Hydrokube\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/hydrokube\" \/>\n<meta property=\"article:published_time\" content=\"2025-07-23T08:35:58+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-07-23T08:36:00+00:00\" \/>\n<meta name=\"author\" content=\"Marc Ewbank\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@hydrokube\" \/>\n<meta name=\"twitter:site\" content=\"@hydrokube\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Marc Ewbank\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/hydrokube.be\\\/en\\\/lien_durete_calcaire\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/hydrokube.be\\\/en\\\/lien_durete_calcaire\\\/\"},\"author\":{\"name\":\"Marc Ewbank\",\"@id\":\"https:\\\/\\\/hydrokube.be\\\/en\\\/#\\\/schema\\\/person\\\/fb5a4b2468ba24f18698d16ee5475cfe\"},\"headline\":\"Link Between Water Hardness and Limescale\",\"datePublished\":\"2025-07-23T08:35:58+00:00\",\"dateModified\":\"2025-07-23T08:36:00+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/hydrokube.be\\\/en\\\/lien_durete_calcaire\\\/\"},\"wordCount\":847,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/hydrokube.be\\\/en\\\/#organization\"},\"articleSection\":[\"FAQ\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/hydrokube.be\\\/en\\\/lien_durete_calcaire\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/hydrokube.be\\\/en\\\/lien_durete_calcaire\\\/\",\"url\":\"https:\\\/\\\/hydrokube.be\\\/en\\\/lien_durete_calcaire\\\/\",\"name\":\"Link Between Water Hardness and Limescale - Hydrokube\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/hydrokube.be\\\/en\\\/#website\"},\"datePublished\":\"2025-07-23T08:35:58+00:00\",\"dateModified\":\"2025-07-23T08:36:00+00:00\",\"description\":\"Water hardness corresponds to the concentration of magnesium and calcium contained in water. 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