Tap water hardness in Arun
We have published hardness data for 4 cities in Arun. The median is 283 mg/L; the hardest water is in Rustington (300 mg/L), the softest in Littlehampton (275 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 Arun, hardest first
| mg/L | mg/L | ||
|---|---|---|---|
| Rustington | 300 | 300 | very hard |
| Findon | 285 | 285 | very hard |
| Arundel | 282 | 282 | very hard |
| Littlehampton | 275 | 275 | very hard |