The majority of homes are fed with a domestic water supply which provides “hard water”. Hard water is simply a designation which is applied to water which has a relatively high level of dissolved minerals in it. The two most important minerals are calcium and magnesium. There is absolutely no health risk associated with hard water – but it can have an impact on both the efficiency and lifespan of domestic 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.
A number of different variables have an influence upon how much scale is generated. One of the strongest influences is the temperature of the water. The higher the water temperature, the greater the amount of mineral deposits that will be freed and the more scale that will form. Lowering the operating temperature of household heating systems, dishwashers and washing machines will tend to reduce the amount of deposited scale and will ensure that these appliances operate more efficiently and have an extended lifespan. Choosing a detergent that includes anti-scaling agents can also help.
Of course, some appliances such as kettles and irons need to be used at high temperature. Some kettles are available with filters these days, which can prevent some of the minerals getting into the sensitive heating elements. Many irons now come with special anti-scaling traps which collect the scale deposits and allow it to be cleaned by simply flushing it under running water. Other alternatives include cleaning or flushing through using special anti-scale chemicals.
There may be no health problems as a result of a hard water supply, but some people will dislike the flavour of hot drinks and food prepared using this. In this case, a water filter could be used. Various types exist, ranging from simple jug type filters to on tap, under sink and even whole house filters. They are all effective, cheaper than you might imagine and relatively quick to install.
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.
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