1.0IWNLhttps://www.iwnl.co.ukLouise Joneshttps://www.iwnl.co.uk/author/louise-jonesbu-uk-co-uk/rich600338<blockquote class="wp-embedded-content" data-secret="Cb2lCE5jtj"><a href="https://www.iwnl.co.uk/help-and-advice/water-hardness/">Water Hardness</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.iwnl.co.uk/help-and-advice/water-hardness/embed/#?secret=Cb2lCE5jtj" width="600" height="338" title="“Water Hardness” — IWNL" data-secret="Cb2lCE5jtj" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://www.iwnl.co.uk/wp-includes/js/wp-embed.min.js </script> https://www.iwnl.co.uk/wp-content/uploads/2022/09/hard-water-scaled.jpg25601707The hardness of your water depends on how many naturally occurring minerals are present in it. This will be determined by the geographical features of where you live in the UK.