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Water Hardness in North Southwark

North Southwark has hard water at 274 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.

274

mg/l CaCO₃

HardUK average: 197.72 mg/l
274
0 (Soft)200 (Hard)400+ (Very Hard)

What Does Hard Water Mean?

With a hardness of 274 mg/l, North Southwark 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
Thames Water
Supply Zone
Stepney (NLE29)
Source Type
River
Treatment Works
Stepney Treatment Works

Full Water Quality Report for North Southwark

See all 8 water quality parameters including pH, chlorine, lead, nitrate, fluoride and more.

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Frequently Asked Questions

Is water hard in North Southwark?▾
Yes, North Southwark has hard water at 274 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 North Southwark?▾
The water hardness in North Southwark is 274 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 Thames Water from river sources.
Who supplies water to North Southwark?▾
Water in North Southwark is supplied by Thames Water, which covers the London and Thames Valley region. The water is sourced from river abstraction and treated at Stepney Treatment Works before distribution.
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