WaterWater Hardness in Surrey
South East • 58 postcode districts • 2 towns
Water Hardness Across Surrey
The average water hardness in Surrey is 305 ppm, classified as very hard. Across 58 postcode districts in the South East region, hardness ranges from 262 ppm to 344 ppm.
Surrey is served by Southern Water and Thames Water. With very hard water, residents may benefit from a <a href="/water-softener-guide/">water softener</a> to reduce limescale and protect appliances.
Towns in Surrey
Water Companies in Surrey
All Postcodes in Surrey
| Postcode | Town | Hardness | PPM | Level |
|---|---|---|---|---|
| RH20 | Pulborough | 344 ppm | Very Hard | |
| GU35 | Bordon | 333 ppm | Very Hard | |
| GU34 | Alton | 332 ppm | Very Hard | |
| GU33 | Liss | 331 ppm | Very Hard | |
| GU32 | Petersfield | 330 ppm | Very Hard | |
| GU31 | Petersfield | 329 ppm | Very Hard | |
| RH9 | Godstone | 329 ppm | Very Hard | |
| GU30 | Liphook | 328 ppm | Very Hard | |
| RH8 | Oxted | 328 ppm | Very Hard | |
| RH7 | Lingfield | 327 ppm | Very Hard | |
| RH6 | Horley | 326 ppm | Very Hard | |
| RH5 | Dorking | 325 ppm | Very Hard | |
| RH4 | Dorking | 324 ppm | Very Hard | |
| RH3 | Betchworth | 323 ppm | Very Hard | |
| RH2 | Reigate | 322 ppm | Very Hard | |
| RH1 | Redhill | 321 ppm | Very Hard | |
| RH19 | East Grinstead | 320 ppm | Very Hard | |
| RH18 | Forest Row | 319 ppm | Very Hard | |
| RH17 | Haywards Heath | 318 ppm | Very Hard | |
| RH16 | Haywards Heath | 317 ppm | Very Hard | |
| RH15 | Burgess Hill | 316 ppm | Very Hard | |
| RH14 | Billingshurst | 315 ppm | Very Hard | |
| RH13 | Horsham | 314 ppm | Very Hard | |
| RH12 | Horsham | 313 ppm | Very Hard | |
| RH11 | Crawley | 312 ppm | Very Hard | |
| GU9 | Farnham | 311 ppm | Very Hard | |
| RH10 | Crawley | 311 ppm | Very Hard | |
| GU8 | Godalming | 310 ppm | Very Hard | |
| GU7 | Godalming | 309 ppm | Very Hard | |
| GU6 | Cranleigh | 308 ppm | Very Hard | |
| GU5 | Guildford | 307 ppm | Very Hard | |
| GU4 | Guildford | 306 ppm | Very Hard | |
| GU3 | Guildford | 305 ppm | Very Hard | |
| GU2 | Guildford | 304 ppm | Very Hard | |
| GU29 | Midhurst | 304 ppm | Very Hard | |
| GU1 | Guildford | 303 ppm | Very Hard | |
| GU28 | Petworth | 303 ppm | Very Hard | |
| GU27 | Haslemere | 302 ppm | Very Hard | |
| GU26 | Hindhead | 301 ppm | Very Hard | |
| GU25 | Virginia Water | 300 ppm | Hard | |
| GU24 | Woking | 299 ppm | Hard | |
| GU23 | Woking | 298 ppm | Hard | |
| GU22 | Woking | 297 ppm | Hard | |
| GU21 | Woking | 296 ppm | Hard | |
| GU20 | Windlesham | 295 ppm | Hard | |
| GU52 | Fleet | 295 ppm | Hard | |
| GU51 | Fleet | 294 ppm | Hard | |
| GU19 | Bagshot | 271 ppm | Hard | |
| GU18 | Lightwater | 270 ppm | Hard | |
| GU17 | Camberley | 269 ppm | Hard | |
| GU16 | Camberley | 268 ppm | Hard | |
| GU15 | Camberley | 267 ppm | Hard | |
| GU47 | Sandhurst | 267 ppm | Hard | |
| GU14 | Farnborough | 266 ppm | Hard | |
| GU46 | Yateley | 266 ppm | Hard | |
| GU12 | Aldershot | 264 ppm | Hard | |
| GU11 | Aldershot | 263 ppm | Hard | |
| GU10 | Farnham | 262 ppm | Hard |
Recommended Products for Surrey
Top picks for households in very hard water areas across Surrey.
Water2Buy W2B200 Water Softener
From ~£400Best-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.
View on AmazonPhilips AWP1775 Shower Filter
From ~£30Instant improvement for skin and hair. Reduces chlorine and limescale at the showerhead — no plumbing needed. A good first step before committing to a full softener.
View on AmazonHard Water Guides
Learn more about water hardness and how to manage it.
All counties in South East • Hardest water areas • Softest water areas • Hard water solutions
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