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Water hardness

The hardness of water is due to the presence of calcium and magnesium minerals that are naturally present in the water. The usual signs of a hard water supply are scaling inside kettles, poor lathering of soaps, and scum.

The majority of raw water in the North West comes from upland surface water reservoirs which are soft or very soft. We do use water from a number of boreholes in the south of the region that are reasonably hard, but these tend to be blended with softer sources to meet demand.

If you are interested in hardness for your dishwasher or washing machine, visit our water quality page where you can get this information quickly and easily. The factsheet on water hardness, which you can access below, can be used to get the conversion tables you might need for your appliance.

Hard water can be softened by the installation of a water softener or the use of ‘jug type’ filters. Medical experts recommend that a non-softened supply is maintained for drinking purposes because softened water may contain high levels of sodium. Softeners should be fitted after the drinking water tap and comply with the requirements of the Water Supply (Water Fittings) Regulations 1999. They should be maintained in accordance with manufacturers’ instructions. 

For more information, please take a look at our factsheet on water hardness (PDF 113 KB opens in a new window)

 

Important notice

Heavy rainfall and sewer flooding

The heavy rainfall may be causing flooding in some parts of the region.

Our teams are out working hard across the region helping our customers who have experienced sewer flooding in their homes.

If you’re experiencing flooding from a road or footpath and there is no evidence of sewage (toilet paper etc.) please report this to your local council, who are responsible for highways drainage flooding.

Please be aware that our phone lines are much busier than normal, take a look at our flooding page for further advice on what to do if you’re affected by flooding.

Heavy rainfall across the North West may be causing flooding in some parts of the region. Our teams are out working hard across the region helping our customers who have experienced sewer flooding in their homes.

Flooding advice

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