Tap water hardness in Isle of Wight
We have published hardness data for 14 cities in Isle of Wight. The median is 268 mg/L; the hardest water is in Wootton (281 mg/L), the softest in St. Helens (190 mg/L).
100 % of these cities have hard or very hard water (over 120 mg/L).
UK suppliers report mg/L CaCO₃ and often Clark degrees (1 °Clark = 14.25 mg/L).
Cities in Isle of Wight, hardest first
| mg/L | mg/L | ||
|---|---|---|---|
| Wootton | 281 | 281 | very hard |
| East Cowes | 280 | 280 | very hard |
| Cowes | 275 | 275 | very hard |
| Godshill | 275 | 275 | very hard |
| Newport | 272 | 272 | very hard |
| Ventnor | 270 | 270 | very hard |
| Wroxall | 270 | 270 | very hard |
| Shanklin | 267 | 267 | very hard |
| Brighstone | 252 | 252 | very hard |
| Ryde | 249 | 249 | very hard |
| Bembridge | 201 | 201 | very hard |
| Brading | 195 | 195 | very hard |
| Sandown | 193 | 193 | very hard |
| St. Helens | 190 | 190 | very hard |