Tap water hardness in Toscana
We have published hardness data for 9 cities in Toscana. The median is 23 °fH; the hardest water is in Sesto Fiorentino (38 °fH), the softest in Grosseto (9 °fH).
89 % of these cities have hard or very hard water (over 120 mg/L).
Italian utilities report °f (French degrees); D.Lgs. 31/2001 recommends 15–50 °f.
Cities in Toscana, hardest first
| °fH | mg/L | ||
|---|---|---|---|
| Sesto Fiorentino | 38 | 380 | very hard |
| Colle di Val d'Elsa | 36 | 360 | very hard |
| Scandicci | 33 | 330 | very hard |
| Campi Bisenzio | 27 | 270 | very hard |
| Siena | 23 | 230 | very hard |
| Agliana | 17 | 170 | hard |
| Montemurlo | 13 | 130 | hard |
| Follonica | 12 | 120 | hard |
| Grosseto | 9 | 90 | moderately hard |