WaterWater Hardness in Oxford
Oxfordshire, South East • 26 postcode districts
Very Hard
The average water hardness in Oxford is 304 ppm, classified as very hard. Oxford is served by Thames Water, covering 26 postcode districts across Oxfordshire 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 Oxford
| Postcode | Water Company | Hardness | PPM | Level |
|---|---|---|---|---|
| OX13 | Thames Water | 350 ppm | Very Hard | |
| OX12 | Thames Water | 349 ppm | Very Hard | |
| OX44 | Thames Water | 349 ppm | Very Hard | |
| OX11 | Thames Water | 348 ppm | Very Hard | |
| OX10 | Thames Water | 347 ppm | Very Hard | |
| OX9 | Thames Water | 335 ppm | Very Hard | |
| OX7 | Thames Water | 333 ppm | Very Hard | |
| OX5 | Thames Water | 331 ppm | Very Hard | |
| OX4 | Thames Water | 330 ppm | Very Hard | |
| OX3 | Thames Water | 329 ppm | Very Hard | |
| OX2 | Thames Water | 328 ppm | Very Hard | |
| OX1 | Thames Water | 327 ppm | Very Hard | |
| OX39 | Thames Water | 321 ppm | Very Hard | |
| OX33 | Thames Water | 315 ppm | Very Hard | |
| OX29 | Thames Water | 288 ppm | Hard | |
| OX28 | Thames Water | 287 ppm | Hard | |
| OX27 | Thames Water | 286 ppm | Hard | |
| OX26 | Thames Water | 285 ppm | Hard | |
| OX25 | Thames Water | 284 ppm | Hard | |
| OX20 | Thames Water | 279 ppm | Hard | |
| OX18 | Thames Water | 254 ppm | Hard | |
| OX17 | Thames Water | 253 ppm | Hard | |
| OX49 | Thames Water | 253 ppm | Hard | |
| OX16 | Thames Water | 252 ppm | Hard | |
| OX15 | Thames Water | 251 ppm | Hard | |
| OX14 | Thames Water | 250 ppm | Hard |
Water Companies Serving Oxford
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