Compare tap water hardness in 2 cities in South West England, England. Average: 26.22°fH (Average quality).
In South West England, tap water hardness averages 26.22°fH, corresponding to hard water. The softest water is found in Bristol (20.5°fH, score 6/10) and the hardest in Bath (31.93°fH, score 4/10). The England average in our dataset is 18.1°fH. All 2 cities have water compliant with DWI regulations (Water Supply (Water Quality) Regulations 2018).
The average tap water hardness in South West England is 26.22°fH, corresponding to hard water. Among the 2 cities covered, the softest water is found in Bristol (20.5°fH) and the hardest in Bath (31.93°fH). The England average in our dataset is 18.1°fH.
Yes. Tap water in South West England is regulated by the Drinking Water Inspectorate (DWI) under the Water Supply (Water Quality) Regulations 2018. Water hardness of 26.22°fH does not affect safety; it only influences appliance maintenance and taste. All 2 cities in our database have compliant water.
With an average of 26.22°fH, a water softener or anti-scale filter is a worthwhile investment in South West England. Limescale significantly shortens the lifespan of boilers, washing machines and kettles. A softener is particularly recommended in cities above 30°fH such as Bath (31.93°fH).
Water in South West England is supplied by Bristol Water, Wessex Water. Data in our database comes from official zone-level analyses published by these utilities (2025).
All 2 cities in South West England with their hardness values are listed on this page. Click on any city name to get full details: quality index, DWI compliance, impact on appliances and personalised recommendations.
Data: Bristol Water, Wessex Water official zone-level hardness reports (2025). Readings verified via DWI drinking water quality database.