Water Hardness in Kew

Kew has very hard water at 303.4 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.

303.4

mg/l CaCO₃

Very HardUK average: 197.72 mg/l
303.4
0 (Soft)200 (Hard)400+ (Very Hard)

What Does Very Hard Water Mean?

With a hardness of 303.4 mg/l, Kew has very 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
Kew
Source Type
Groundwater
Treatment Works
Sefton Treatment Works

Full Water Quality Report for Kew

See all 6 water quality parameters including pH, chlorine, lead, nitrate, fluoride and more.

View →

Frequently Asked Questions

Is water hard in Kew?
Yes, Kew has hard water at 303.4 mg/l CaCO₃, classified as "Very 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 Kew?
The water hardness in Kew is 303.4 mg/l CaCO₃ (milligrams per litre of calcium carbonate). This is classified as "Very 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 Kew?
Water in Kew 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.
Check another postcode →Browse all hard water areas →