Tap water hardness in Dorset
We have published hardness data for 27 cities in Dorset. The median is 296 mg/L; the hardest water is in Sherborne (372 mg/L), the softest in Bridport (264 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 Dorset, hardest first
| mg/L | mg/L | ||
|---|---|---|---|
| Sherborne | 372 | 372 | very hard |
| Beaminster | 318 | 318 | very hard |
| Sturminster Marshall | 309 | 309 | very hard |
| Blandford Forum | 304 | 304 | very hard |
| Wool | 304 | 304 | very hard |
| Bere Regis | 302 | 302 | very hard |
| Charlton Marshall | 301 | 301 | very hard |
| Milborne St Andrew | 300 | 300 | very hard |
| Wareham | 300 | 300 | very hard |
| Pimperne | 299 | 299 | very hard |
| Sandford | 298 | 298 | very hard |
| Dorchester | 296 | 296 | very hard |
| Puddletown | 296 | 296 | very hard |
| Stalbridge | 296 | 296 | very hard |
| Motcombe | 293 | 293 | very hard |
| Shaftesbury | 290 | 290 | very hard |
| Lytchett Matravers | 290 | 290 | very hard |
| Charminster | 288 | 288 | very hard |
| Charmouth | 284 | 284 | very hard |
| Sturminster Newton | 283 | 283 | very hard |
| Fortuneswell | 281 | 281 | very hard |
| Weymouth | 281 | 281 | very hard |
| Swanage | 278 | 278 | very hard |
| Gillingham | 276 | 276 | very hard |
| Maiden Newton | 275 | 275 | very hard |
| Chickerell | 272 | 272 | very hard |
| Bridport | 264 | 264 | very hard |