WaterHard.uk

Is Guildford Water Hard or Soft?

Hard at 296 ppm • Surrey, South East

296 PPM 0 200 400
Hard

The average water hardness in Guildford is 296 ppm, classified as hard. Guildford is served by Thames Water, covering 38 postcode districts across Surrey in the South East region.

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

Water Hardness by Postcode in Guildford

Postcode Water Company Hardness PPM Level
GU35 Thames Water
333 ppm
333 ppm Very Hard
GU34 Thames Water
332 ppm
332 ppm Very Hard
GU33 Thames Water
331 ppm
331 ppm Very Hard
GU32 Thames Water
330 ppm
330 ppm Very Hard
GU31 Thames Water
329 ppm
329 ppm Very Hard
GU30 Thames Water
328 ppm
328 ppm Very Hard
GU9 Thames Water
311 ppm
311 ppm Very Hard
GU8 Thames Water
310 ppm
310 ppm Very Hard
GU7 Thames Water
309 ppm
309 ppm Very Hard
GU6 Thames Water
308 ppm
308 ppm Very Hard
GU5 Thames Water
307 ppm
307 ppm Very Hard
GU4 Thames Water
306 ppm
306 ppm Very Hard
GU3 Thames Water
305 ppm
305 ppm Very Hard
GU2 Thames Water
304 ppm
304 ppm Very Hard
GU29 Thames Water
304 ppm
304 ppm Very Hard
GU1 Thames Water
303 ppm
303 ppm Very Hard
GU28 Thames Water
303 ppm
303 ppm Very Hard
GU27 Thames Water
302 ppm
302 ppm Very Hard
GU26 Thames Water
301 ppm
301 ppm Very Hard
GU25 Thames Water
300 ppm
300 ppm Hard
GU24 Thames Water
299 ppm
299 ppm Hard
GU23 Thames Water
298 ppm
298 ppm Hard
GU22 Thames Water
297 ppm
297 ppm Hard
GU21 Thames Water
296 ppm
296 ppm Hard
GU20 Thames Water
295 ppm
295 ppm Hard
GU52 Thames Water
295 ppm
295 ppm Hard
GU51 Thames Water
294 ppm
294 ppm Hard
GU19 Thames Water
271 ppm
271 ppm Hard
GU18 Thames Water
270 ppm
270 ppm Hard
GU17 Thames Water
269 ppm
269 ppm Hard
GU16 Thames Water
268 ppm
268 ppm Hard
GU15 Thames Water
267 ppm
267 ppm Hard
GU47 Thames Water
267 ppm
267 ppm Hard
GU14 Thames Water
266 ppm
266 ppm Hard
GU46 Thames Water
266 ppm
266 ppm Hard
GU12 Thames Water
264 ppm
264 ppm Hard
GU11 Thames Water
263 ppm
263 ppm Hard
GU10 Thames Water
262 ppm
262 ppm Hard

Water Companies Serving Guildford

Thames Water

Average hardness: 302 ppm (Very Hard) • 412 postcodes served

Water Hardness Guides

What Is Water Hardness? Effects Solutions Water Softeners Limescale Removal

Recommended Products for Guildford

Popular choices for households dealing with hard water in this area.

Water2Buy W2B200 Water Softener

From ~£400

Best-value whole-house ion-exchange softener for UK homes. Eliminates limescale from pipes, boilers, and appliances. Digital metered regeneration — low salt use. 7-year warranty.

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Philips AWP1775 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 ~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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