Tap water hardness in Test Valley
We have published hardness data for 4 cities in Test Valley. The median is 303 mg/L; the hardest water is in Romsey (341 mg/L), the softest in North Baddesley (285 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 Test Valley, hardest first
| mg/L | mg/L | ||
|---|---|---|---|
| Romsey | 341 | 341 | very hard |
| Charlton | 305 | 305 | very hard |
| Andover | 302 | 302 | very hard |
| North Baddesley | 285 | 285 | very hard |