WaterWater Hardness in Reading
Berkshire, South East • 30 postcode districts
Hard
The average water hardness in Reading is 291 ppm, classified as hard. Reading is served by Thames Water, covering 30 postcode districts across Berkshire 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 Reading
| Postcode | Water Company | Hardness | PPM | Level |
|---|---|---|---|---|
| RG31 | Thames Water | 327 ppm | Very Hard | |
| RG30 | Thames Water | 326 ppm | Very Hard | |
| RG9 | Thames Water | 314 ppm | Very Hard | |
| RG8 | Thames Water | 313 ppm | Very Hard | |
| RG7 | Thames Water | 312 ppm | Very Hard | |
| RG6 | Thames Water | 311 ppm | Very Hard | |
| RG5 | Thames Water | 310 ppm | Very Hard | |
| RG4 | Thames Water | 309 ppm | Very Hard | |
| RG2 | Thames Water | 307 ppm | Very Hard | |
| RG1 | Thames Water | 306 ppm | Very Hard | |
| RG29 | Thames Water | 302 ppm | Very Hard | |
| RG28 | Thames Water | 301 ppm | Very Hard | |
| RG27 | Thames Water | 300 ppm | Hard | |
| RG26 | Thames Water | 299 ppm | Hard | |
| RG25 | Thames Water | 298 ppm | Hard | |
| RG24 | Thames Water | 297 ppm | Hard | |
| RG23 | Thames Water | 296 ppm | Hard | |
| RG22 | Thames Water | 295 ppm | Hard | |
| RG21 | Thames Water | 294 ppm | Hard | |
| RG20 | Thames Water | 293 ppm | Hard | |
| RG19 | Thames Water | 269 ppm | Hard | |
| RG18 | Thames Water | 268 ppm | Hard | |
| RG17 | Thames Water | 267 ppm | Hard | |
| RG14 | Thames Water | 264 ppm | Hard | |
| RG45 | Thames Water | 263 ppm | Hard | |
| RG12 | Thames Water | 262 ppm | Hard | |
| RG10 | Thames Water | 260 ppm | Hard | |
| RG42 | Thames Water | 260 ppm | Hard | |
| RG41 | Thames Water | 259 ppm | Hard | |
| RG40 | Thames Water | 258 ppm | Hard |
Water Companies Serving Reading
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