Greater London · London

Is Sutton water hard or soft?

Hard at 239 ppm · 7 postcode districts

  • Supplier SES Water
  • County Greater London
  • Postcodes 7
Area average
239
ppm CaCO₃
Hard
Soft
Moderate
Hard
Very hard
0100200300400+

The average water hardness in Sutton is 239 ppm, classified as hard. Sutton is served by SES Water, covering 7 postcode districts across Greater London in the London region.

Hardness varies across the area — see the table below for a breakdown by postcode district.

By postcode

Water Hardness by Postcode in Sutton

Sorted by hardness — tap a postcode for full details.

Postcode Water Company Hardness PPM Level
SM7 SES Water
242
242 ppm Hard
SM6 SES Water
241
241 ppm Hard
SM5 SES Water
240
240 ppm Hard
SM4 SES Water
239
239 ppm Hard
SM3 SES Water
238
238 ppm Hard
SM2 SES Water
237
237 ppm Hard
SM1 SES Water
236
236 ppm Hard
Suppliers

Water Companies Serving Sutton

Tap for full coverage area and hardness data.

SES Water

239 ppm Hard

Water Hardness Guides

Learn more about water hardness and how to manage it.

What Is Water Hardness? Effects Solutions Water Softeners Limescale Removal
Recommended

Products for Sutton

Popular choices for households dealing with hard water.

Splendid Twin Tank Water Softener

From ~£400

Twin-tank electric softener sized for 1 to 7 bedroom homes. Removes limescale from pipes, boilers, and appliances and delivers continuous soft water, with metered regeneration to keep salt use low.

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Philips Shower Filter

From ~£30

Quick win for skin and hair in hard water areas. Reduces chlorine and limescale, fits standard shower hoses in minutes, no tools needed. Cartridge lasts around 6 months.

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BRITA Marella Water Filter Jug

From ~£20

UK's best-selling filter jug. Reduces limescale, chlorine, and metals for better-tasting tap water. Quick first step alongside a softener.

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