WaterWater Hardness in Wiltshire
South West • 29 postcode districts • 2 towns
Water Hardness Across Wiltshire
The average water hardness in Wiltshire is 211 ppm, classified as hard. Across 29 postcode districts in the South West region, hardness ranges from 150 ppm to 273 ppm.
Wiltshire is served by Wessex Water. With hard water, residents may benefit from a <a href="/water-softener-guide/">water softener</a> to reduce limescale and protect appliances.
Towns in Wiltshire
Water Companies in Wiltshire
All Postcodes in Wiltshire
| Postcode | Town | Hardness | PPM | Level |
|---|---|---|---|---|
| SP9 | Tidworth | 273 ppm | Hard | |
| SP8 | Gillingham | 272 ppm | Hard | |
| SP7 | Shaftesbury | 271 ppm | Hard | |
| SP6 | Fordingbridge | 270 ppm | Hard | |
| SP5 | Salisbury | 269 ppm | Hard | |
| SP4 | Salisbury | 268 ppm | Hard | |
| SP3 | Salisbury | 267 ppm | Hard | |
| SP2 | Salisbury | 266 ppm | Hard | |
| SP1 | Salisbury | 265 ppm | Hard | |
| SP11 | Andover | 215 ppm | Hard | |
| SP10 | Andover | 214 ppm | Hard | |
| SN9 | Pewsey | 207 ppm | Hard | |
| SN8 | Marlborough | 206 ppm | Hard | |
| SN7 | Faringdon | 205 ppm | Hard | |
| SN6 | Swindon | 204 ppm | Hard | |
| SN5 | Swindon | 203 ppm | Hard | |
| SN4 | Swindon | 202 ppm | Hard | |
| SN3 | Swindon | 201 ppm | Hard | |
| SN2 | Swindon | 200 ppm | Hard | |
| SN1 | Swindon | 199 ppm | Hard | |
| SN26 | Swindon | 189 ppm | Hard | |
| SN25 | Swindon | 188 ppm | Hard | |
| SN16 | Malmesbury | 156 ppm | Moderately Hard | |
| SN15 | Chippenham | 155 ppm | Moderately Hard | |
| SN14 | Chippenham | 154 ppm | Moderately Hard | |
| SN13 | Corsham | 153 ppm | Moderately Hard | |
| SN12 | Melksham | 152 ppm | Moderately Hard | |
| SN11 | Calne | 151 ppm | Moderately Hard | |
| SN10 | Devizes | 150 ppm | Moderately Hard |
Recommended Products for Wiltshire
Top picks for households in hard water areas across Wiltshire.
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 West • Hardest water areas • Softest water areas • Hard water solutions
Get Water Hardness Updates
Be notified when your water company reports changes to hardness levels.