WG
WaterGrade

Water Hardness in Harrow Weald

Harrow Weald has very hard water at 360 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.

360

mg/l CaCO₃

Very HardUK average: 197.72 mg/l
360
0 (Soft)200 (Hard)400+ (Very Hard)

What Does Very Hard Water Mean?

With a hardness of 360 mg/l, Harrow Weald 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
Affinity Water
Supply Zone
Harrow North (AF056)
Source Type
Groundwater
Treatment Works
Harrow North Treatment Works

Full Water Quality Report for Harrow Weald

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Frequently Asked Questions

Is water hard in Harrow Weald?▾
Yes, Harrow Weald has hard water at 360 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 Harrow Weald?▾
The water hardness in Harrow Weald is 360 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 Affinity Water from underground aquifer sources.
Who supplies water to Harrow Weald?▾
Water in Harrow Weald is supplied by Affinity Water, which covers the South East England region. The water is sourced from underground aquifers (boreholes) and treated at Harrow North Treatment Works before distribution.
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