My water supply

Water hardness

When water falls as rain, it's "soft" and free of minerals.

It picks up naturally occurring minerals, such as calcium and magnesium, as it passes through rock, sand and soil. This causes the water to become ‘hard.’

All the water we supply is ‘hard’ together with more than 60% of homes in the UK.

The picture shows a comparison with other areas in the UK. 

Water Hardness in the UK

Hard water in your home

Find out more about hard water in your home

Find out how hard the water is in your home

Our area is divided into 19 water quality zones. To access the correct hard water reading:

1.  Find the water quality zone for your area

2. Use the water quality zone to read the table below

Zone Zone Name mg/l or ppm CaCO3 Degrees Clark  Degrees French  Degrees German 
BB Barr Beacon  206.3 14.4 20.6 11.6
BB1 Barr Beacon 1 207.5 14.5 20.8 11.6
BUR Burton 228.6 16.0 22.9 12.8
CH Cannock High 190.4 13.3 19.0 10.7
CW Cawney Hill  163.6 11.5 16.4 9.2
GLA Glascote  236.5 16.6 23.7 13.2
HG Hayley Green 167.6 11.7 16.8 9.4
HW Hopwas 224.8 15.7 22.5 12.6
RCL Rugeley Cannock Low 165.7 11.6 16.6 9.3
SGD Sedgely Darlaston 157.1 11.0 15.7 8.8
SP Springsmire  217.3 15.2 21.7 12.2
SU Sutton Coldfield  203.3 14.2 20.3 11.4
SV Shavers End  173.8 12.2 17.4 9.7
SV2 Shavers End 2 171.1 12.0 17.1 9.6
UTT Uttoxeter 262.2 18.4 26.2 14.7
WA Walsall  172.6 12.1 17.3 9.7
WA1 Walsall 1 171.0 12.0 17.1 9.6
WB West Bromwich  161.7 11.3 16.2 9.1
WIN Winshill 352.5 24.7 35.2 19.7