Tap water hardness in GR
We have published hardness data for 16 cities in GR. The median is 14.7 °fH; the hardest water is in Landquart (29 °fH), the softest in Zernez (3.2 °fH).
69 % of these cities have hard or very hard water (over 120 mg/L).
Cities in GR, hardest first
| °fH | mg/L | ||
|---|---|---|---|
| Landquart | 29 | 290 | very hard |
| Obersaxen Mundaun | 18.4 | 184 | very hard |
| Chur | 18.1 | 181 | very hard |
| Laax | 17.3 | 173 | hard |
| Schluein | 16.7 | 167 | hard |
| Trimmis | 16.2 | 162 | hard |
| Andeer | 15.2 | 152 | hard |
| Ilanz/Glion | 14.7 | 147 | hard |
| Flims | 14.6 | 146 | hard |
| Sils im Engadin/Segl | 14.3 | 143 | hard |
| Celerina/Schlarigna | 14.1 | 141 | hard |
| Davos | 9.4 | 94 | moderately hard |
| Falera | 6 | 60 | soft |
| Mesocco | 5.7 | 57 | soft |
| Disentis/Mustér | 4.9 | 49 | soft |
| Zernez | 3.2 | 32 | soft |