The domestic water supply to the majority of homes is “hard water”. Hard water is simply a definition used to describe water which has a fairly high concentration of minerals dissolved in it. Calcium and magnesium are the two most important minerals. There is, according to the World Health Organisation, absolutely no health risk associated with hard water. However, it can have an effect on the operating efficiency and useful lifetime of a number of different household appliances.
As a consequence of hard water, mineral deposits can be laid down in water pipes and a range of household appliances. Household appliances which use hot or boiling water are especially at risk as heating the water frees the minerals it contains which then solidify as “scale”. Coffee makers, kettles, steam irons, dishwashers and washing machines are all prone to this effect – as are household central heating systems and boilers.
The amounts of minerals that are released depend upon a number of different variables. One of these is temperature – the higher the temperature of the water, the more minerals will be released and the more scale will form. Running central heating systems, washing machines and dishwashers at lower temperature settings will reduce the amount of scale deposited and ensure that these appliances operate efficiently and have a long lifetime. Some soaps and detergents contain anti-scaling ingredients and these can also help to minimise scaling.
Using a lower water temperature with appliances such as steam irons, kettles and coffee makers isn’t very practical. Some kettles come with filters built in these days, which can prevent or reduce the incursion of harmful minerals (as well as improving the taste of hot drinks). Some modern irons incorporate specially designed, removable scale traps which make it easy to wash away any scale under a running tap. Other alternatives include periodically cleaning your appliances with special anti-scale chemicals.
Although there are no health problems associated with a hard water supply, many people will dislike the resulting taste of hot drinks or boiled and steamed food. On the other hand, some people actually prefer the taste of tea that is made using hard water to that made using soft water – it is, in the truest sense of the word, a matter of taste. If you don’t like the taste of your hot drinks and food, then you can make use of a water filter. A simple, but effective, jug filter will work – or you could install an under sink or whole house filter if you prefer.
Whilst it may seem like a bit of an inconvenience, it’s well worth taking a little effort to combat the effects of a hard water supply. Apart from improved efficiency of domestic appliances, using the right detergents, operating at a lower water temperature and occasional cleaning will save you money and extend the life of your household goods.
A Tefal steam generator iron – will slash your ironing time in half. You’ll wonder how you managed without one.