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Sometimes you may notice your water tastes or smells different to usual. This could be down to a number of reasons.

Water contains a number of naturally occurring elements and minerals such as calcium and magnesium.

The varying concentrations of these minerals in water give rise to slightly different tastes, which can be detected by customers especially if they travel to different parts of the country. Water also contains a mixture of gases (air, carbon dioxide) that can give tap water a characteristic taste.

A change to the taste and odour of your cold water supply may be due to a number of reasons. These can include the following:

Moving to a new property If you've moved in to a property in a new area it is likely that it is supplied with water from a different treatment works. The treatment works may treat water from a different source of raw water - for example from a river instead of a borehole.
Seasonal Changes Musty tastes and smells can arise from water that has been warmed in pipes
Plumbing systems and Flexible Hoses When water stands in the plumbing system, small amounts of substances may dissolve from the pipes. A metallic or bitter taste can arise from copper or iron pipes.

Flexible hoses used to fill drinking water tanks, vending machines, washing machines and dishwashers can give rise to a variety of tastes and odours such as rubbery, plastic, metallic, dry, musty, TCP or reminiscent of swimming pools.
The time of day The level of chlorine in the water reaching you may be more noticeable at times of peak demand. These peaks in demand tend to occur in the morning and early evening.

Check with your Neighbours

If your water has an unpleasant taste or odour it may be a good idea to check with a neighbour to see if they are experiencing the same taste and odour issues. If they are not then the problem is unlikely to be with the water supplied for the IWNL network.

Different types of tastes and odours

The following sections describe the common causes of taints and odours that affect drinking water supplies. If you have any further concerns about the taste and/or odour of your water please call us on 02920 028 711 or fill in our contact form.