How do I check the water hardness level?
Question: How do I check the water hardness level?
You can do this using kits available from reputable plumbing equipment suppliers. These kits normally contain a special liquid which, when added to water, will change colour depending on the water hardness level. You can also buy indicator tabs which just have to be placed in a glass of tap water for a few seconds. These also work according to the colour coding principle.