Water Hardness in Derby
Derby has moderately hard water at 151.7 mg/l CaCO₃. This is below the UK national average of 197.72 mg/l. Some limescale may occur but it is usually manageable.
151.7
mg/l CaCO₃
Moderately HardUK average: 197.72 mg/l
151.7
0 (Soft)200 (Hard)400+ (Very Hard)
What Does Moderately Hard Water Mean?
At 151.7 mg/l, Derby has moderately hard water. This is a moderate level that may cause some limescale in high-use areas like kettles and showerheads.
Regular descaling of kettles and appliances should be sufficient to manage any buildup. A whole-house water softener is optional at this level but may still be beneficial.
Water Supplier
- Water Company
- United Utilities
- Supply Zone
- Derby
- Source Type
- Groundwater
- Treatment Works
- Sefton Treatment Works
Full Water Quality Report for Derby
See all 6 water quality parameters including pH, chlorine, lead, nitrate, fluoride and more.
Frequently Asked Questions
Is water hard in Derby?▾
Derby has moderately hard water at 151.7 mg/l CaCO₃, classified as "Moderately Hard". Some limescale may occur but it is usually manageable with regular cleaning.
What is the hardness of water in Derby?▾
The water hardness in Derby is 151.7 mg/l CaCO₃ (milligrams per litre of calcium carbonate). This is classified as "Moderately Hard" on the standard UK scale and is below the national average of 197.72 mg/l. Water is supplied by United Utilities from underground aquifer sources.
Who supplies water to Derby?▾
Water in Derby is supplied by United Utilities, which covers the North West England region. The water is sourced from underground aquifers (boreholes) and treated at Sefton Treatment Works before distribution.