Water Hardness in Runcorn
Runcorn has hard water at 291 mg/l CaCO₃. This is above the UK national average of 197.72 mg/l. You may notice limescale buildup on taps, in kettles, and around showerheads.
291
mg/l CaCO₃
HardUK average: 197.72 mg/l
291
0 (Soft)200 (Hard)400+ (Very Hard)
What Does Hard Water Mean?
With a hardness of 291 mg/l, Runcorn has hard water. This level of hardness is common in areas supplied from chalk and limestone aquifers in the South East of England.
You will likely notice white limescale deposits on taps, showerheads, and inside your kettle. Over time, limescale can reduce the efficiency of boilers and heating systems, increasing energy costs. A water softener can help prevent these issues.
Water Supplier
- Water Company
- United Utilities
- Supply Zone
- Appleton
- Source Type
- Groundwater
- Treatment Works
- Halton Treatment Works
Full Water Quality Report for Runcorn
See all 6 water quality parameters including pH, chlorine, lead, nitrate, fluoride and more.
Frequently Asked Questions
Is water hard in Runcorn?▾
Yes, Runcorn has hard water at 291 mg/l CaCO₃, classified as "Hard". You will likely notice limescale buildup on taps, in kettles, and around showerheads. A water softener or regular descaling can help manage this.
What is the hardness of water in Runcorn?▾
The water hardness in Runcorn is 291 mg/l CaCO₃ (milligrams per litre of calcium carbonate). This is classified as "Hard" on the standard UK scale and is above the national average of 197.72 mg/l. Water is supplied by United Utilities from underground aquifer sources.
Who supplies water to Runcorn?▾
Water in Runcorn is supplied by United Utilities, which covers the North West England region. The water is sourced from underground aquifers (boreholes) and treated at Halton Treatment Works before distribution.