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

Alkalinty (Av mg/l) Calcium (Av mg/l) Magnesium (Av mg/l) mg/l or ppm CaCO3 Degrees Clark Degrees French Degrees German
BB Barr Beacon 132.0 56.98 10.10 183.9 12.9 18.4 10.3
BB1 Barr Beacon 1 133.3 60.00 14.30 208.7 14.6 20.9 11.7
BUR1 Burton 1 138.3 60.30 14.72 211.2 14.8 21.1 11.8
BUR2 Burton 2 138.3 61.46 14.90 214.8 15.0 21.5 12.0
CH Cannock High 144.9 69.19 5.02 193.4 13.5 19.3 10.8
CW Cawney Hill 108.9 47.96 7.34 150.0 10.5 15.0 8.4
GLA Glascote 154.6 74.70 11.20 232.6 16.3 23.3 13.0
HG Hayley Green 102.4 49.24 8.30 157.1 11.0 15.7 8.8
HW Hopwas 149.9 73.61 13.40 239.0 16.7 23.9 13.4
RCL Rugeley Cannock Low 93.89 38.50 6.43 122.6 8.6 12.3 6.9
SGD Sedgely Darlaston 100.2 41.36 6.76 131.1 9.2 13.1 7.3
SP Springsmire 153.7 71.93 8.21 213.4 14.9 21.3 12.0
SU Sutton Coldfield 138.4 62.00 10.82 199.4 14.0 19.9 11.2
SV Shavers End 119.8 59.19 7.49 178.6 12.5 17.9 10.0
SV2 Shavers End 2 121.1 59.53 7.84 180.9 12.7 18.1 10.1
UTT Uttoxeter 220.9 80.63 14.46 260.8 18.3 26.1 14.6
WA Walsall 95.7 38.98 6.80 125.3 8.8 12.5 7.0
WA1 Walsall 1 108.2 38.87 6.57 124.1 8.7 12.4 6.9
WB West Bromwich 98.0 40.26 6.76 128.4 9.0 12.8 7.2
WIN Winshill 252.5 94.97 31.82 368.1 25.8 36.8 20.6