WaterWater Hardness in Redhill
Surrey, South East • 20 postcode districts
Very Hard
The average water hardness in Redhill is 321 ppm, classified as very hard. Redhill is served by Southern Water, covering 20 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 Redhill
| Postcode | Water Company | Hardness | PPM | Level |
|---|---|---|---|---|
| RH20 | Southern Water | 344 ppm | Very Hard | |
| RH9 | Southern Water | 329 ppm | Very Hard | |
| RH8 | Southern Water | 328 ppm | Very Hard | |
| RH7 | Southern Water | 327 ppm | Very Hard | |
| RH6 | Southern Water | 326 ppm | Very Hard | |
| RH5 | Southern Water | 325 ppm | Very Hard | |
| RH4 | Southern Water | 324 ppm | Very Hard | |
| RH3 | Southern Water | 323 ppm | Very Hard | |
| RH2 | Southern Water | 322 ppm | Very Hard | |
| RH1 | Southern Water | 321 ppm | Very Hard | |
| RH19 | Southern Water | 320 ppm | Very Hard | |
| RH18 | Southern Water | 319 ppm | Very Hard | |
| RH17 | Southern Water | 318 ppm | Very Hard | |
| RH16 | Southern Water | 317 ppm | Very Hard | |
| RH15 | Southern Water | 316 ppm | Very Hard | |
| RH14 | Southern Water | 315 ppm | Very Hard | |
| RH13 | Southern Water | 314 ppm | Very Hard | |
| RH12 | Southern Water | 313 ppm | Very Hard | |
| RH11 | Southern Water | 312 ppm | Very Hard | |
| RH10 | Southern Water | 311 ppm | Very Hard |
Water Companies Serving Redhill
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