WaterWater Hardness in Portsmouth
Hampshire, South East • 34 postcode districts
Hard
The average water hardness in Portsmouth is 261 ppm, classified as hard. Portsmouth is served by Portsmouth Water, covering 34 postcode districts across Hampshire 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 Portsmouth
| Postcode | Water Company | Hardness | PPM | Level |
|---|---|---|---|---|
| PO22 | Portsmouth Water | 287 ppm | Hard | |
| PO21 | Portsmouth Water | 286 ppm | Hard | |
| PO20 | Portsmouth Water | 285 ppm | Hard | |
| PO9 | Portsmouth Water | 283 ppm | Hard | |
| PO8 | Portsmouth Water | 282 ppm | Hard | |
| PO7 | Portsmouth Water | 281 ppm | Hard | |
| PO6 | Portsmouth Water | 280 ppm | Hard | |
| PO5 | Portsmouth Water | 279 ppm | Hard | |
| PO4 | Portsmouth Water | 278 ppm | Hard | |
| PO3 | Portsmouth Water | 277 ppm | Hard | |
| PO2 | Portsmouth Water | 276 ppm | Hard | |
| PO1 | Portsmouth Water | 275 ppm | Hard | |
| PO41 | Portsmouth Water | 271 ppm | Hard | |
| PO40 | Portsmouth Water | 270 ppm | Hard | |
| PO19 | Portsmouth Water | 261 ppm | Hard | |
| PO18 | Portsmouth Water | 260 ppm | Hard | |
| PO17 | Portsmouth Water | 259 ppm | Hard | |
| PO16 | Portsmouth Water | 258 ppm | Hard | |
| PO15 | Portsmouth Water | 257 ppm | Hard | |
| PO14 | Portsmouth Water | 256 ppm | Hard | |
| PO13 | Portsmouth Water | 255 ppm | Hard | |
| PO12 | Portsmouth Water | 254 ppm | Hard | |
| PO11 | Portsmouth Water | 253 ppm | Hard | |
| PO10 | Portsmouth Water | 252 ppm | Hard | |
| PO39 | Portsmouth Water | 246 ppm | Hard | |
| PO38 | Portsmouth Water | 245 ppm | Hard | |
| PO37 | Portsmouth Water | 244 ppm | Hard | |
| PO36 | Portsmouth Water | 243 ppm | Hard | |
| PO35 | Portsmouth Water | 242 ppm | Hard | |
| PO34 | Portsmouth Water | 241 ppm | Hard | |
| PO33 | Portsmouth Water | 240 ppm | Hard | |
| PO32 | Portsmouth Water | 239 ppm | Hard | |
| PO31 | Portsmouth Water | 238 ppm | Hard | |
| PO30 | Portsmouth Water | 237 ppm | Hard |
Water Companies Serving Portsmouth
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