Compare tap water hardness in 4 cities in West Midlands, England. Average: 13.13°fH (Excellent quality).
In West Midlands, tap water hardness averages 13.13°fH, corresponding to slightly hard water. The softest water is found in Birmingham (8.46°fH, score 9/10) and the hardest in Wolverhampton (15.09°fH, score 7/10). The England average in our dataset is 18.1°fH. All 4 cities have water compliant with DWI regulations (Water Supply (Water Quality) Regulations 2018).
The average tap water hardness in West Midlands is 13.13°fH, corresponding to slightly hard water. Among the 4 cities covered, the softest water is found in Birmingham (8.46°fH) and the hardest in Wolverhampton (15.09°fH). The England average in our dataset is 18.1°fH.
Yes. Tap water in West Midlands is regulated by the Drinking Water Inspectorate (DWI) under the Water Supply (Water Quality) Regulations 2018. Water hardness of 13.13°fH does not affect safety; it only influences appliance maintenance and taste. All 4 cities in our database have compliant water.
At 13.13°fH average, a water softener is optional in West Midlands. Basic anti-scale measures (pitcher filter, regular descaling) are sufficient in most cities.
Water in West Midlands is supplied by Severn Trent Water. Data in our database comes from official zone-level analyses published by these utilities (2025).
All 4 cities in West Midlands 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: Severn Trent Water official zone-level hardness reports (2025). Readings verified via DWI drinking water quality database.