We recommend you contact us before purchasing one of our hard water filters. This is so we can help you choose the most appropriate filter based on how hard your water is. You may prefer a hard water filter for your whole house, or just the kitchen sink, for example. For a whole house system you need a mains hard water filter.
If you live in an area of the UK with hard to very hard water you may wish to consider one of our OneFlow Hard water filters.
Call 01352 838 281
It's water that is high in certain minerals. The minerals that contribute to water hardness are calcium and magnesium, mainly in combination with bicarbonate, sulphate and chloride. When hard water is heated above 61 degrees (or as it evaporates) the balance between the dissolved minerals is upset and the bicarbonate converts to carbonate. This is what causes limescale!
Hard drinking water is not considered to be harmful to health. It's more of an inconvenience, but it can be resolved by buying and installing either a hard water filter for your drinking water; the Pearl H, or a whole house system such as the Moby H or Moby TH.
Yes, hard water can cost you money, both in terms of heating costs and having to replace white goods. It can shorten the life of clothing, household appliances such as washing machines and dishwashers, and plumbing such as hoses and pipes; basically anything that hard water comes into contact with.
Look at the map to see whether you're likely to have hard water. Hardess is measured as the equivalent amount of calcium carbonate in parts per million (mg/l).
|Hardness as CaCO3 mg/l||Water Hardness Levels|
The table below lists UK counties with the hardest water.
|County||Water Hardness Level|
|Bedfordshire||Hard to Very Hard|
|Berkshire||Hard to Very Hard|
|Buckinghamshire||Hard to Very Hard|
|Cambridgeshire||Hard to Very Hard|
|Dorset||Hard to Very Hard|
|Essex||Hard to Very Hard|
|Gloucestershire||Hard to Very Hard|
|Greater London||Moderately Hard|
|Hampshire||Hard to Very Hard|
|Hertfordshire||Hard to Very Hard|
|Kent||Hard to Very Hard|
|Oxfordshire||Hard to Very Hard|
|Surrey||Hard to Very Hard|
|Sussex||Hard to Very Hard|
|Wiltshire||Hard to Very Hard|
If you live in Scotland; you're unlikely to have hard water, although does seem to be changing due to increased use of borehole water in the public supply.
A water filter works by forcing the fluid through a medium that has tiny pores. Anything larger than those pores gets stuck while the liquid flows through. Minerals that cause hard water, calcium carbonate and magnesium carbonate (CaCO3 and MgCO3 respectively), are dissolved in the water. That means they don't really have physical dimensions big enough for standard filtration to work.
"Aha, so no filter will work for limescale then", you might say. In the strictest sense that's correct, however; we have filter cartridges that treat and condition those pesky limescale causing minerals by altering their ionisation properties. This converts them into soft, microscopic crystals that just flow right through your appliances and plumbing.
Those water filter cartrdges fit inside all of our standard water filter housings and so we feel it's fair enough to describe one of these hard water treatment systems as a hard water filter.
We're here to help. Call us on 01352 838 281 if you have any questions about hard water filters.
Read our blog post about hard water HERE
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