Hardest and softest tap water in Switzerland
All 650 cities in Switzerland with published data, ranked by total hardness. The national median is 26.7 °fH.
25 cities with the hardest water
| # | °fH | mg/L | ||
|---|---|---|---|---|
| 1 | Oeschgen · AG | 52.2 | 522 | very hard |
| 2 | Giebenach · BL | 48.2 | 482 | very hard |
| 3 | Buus · BL | 48 | 480 | very hard |
| 4 | Hellikon · AG | 44.1 | 441 | very hard |
| 5 | Rorbas · ZH | 44.1 | 441 | very hard |
| 6 | Stein · AG | 43.5 | 436 | very hard |
| 7 | Schönenbuch · BL | 42.7 | 427 | very hard |
| 8 | Kaisten · AG | 42.5 | 425 | very hard |
| 9 | Hohenrain · LU | 42.3 | 423 | very hard |
| 10 | Münchwilen · AG | 42.3 | 423 | very hard |
| 11 | Dorf · ZH | 42 | 420 | very hard |
| 12 | Basadingen-Schlattingen · TG | 41.6 | 416 | very hard |
| 13 | Eschenz · TG | 41.6 | 416 | very hard |
| 14 | Unterlunkhofen · AG | 41.3 | 413 | very hard |
| 15 | Lausen · BL | 41.3 | 413 | very hard |
| 16 | Frick · AG | 41.1 | 411 | very hard |
| 17 | Oberembrach · ZH | 41 | 410 | very hard |
| 18 | Zuzgen · AG | 41 | 410 | very hard |
| 19 | Zeiningen · AG | 40.7 | 407 | very hard |
| 20 | Wängi · TG | 40.5 | 405 | very hard |
| 21 | Diegten · BL | 40.2 | 402 | very hard |
| 22 | Römerswil · LU | 40.1 | 402 | very hard |
| 23 | Elsau · ZH | 40.1 | 401 | very hard |
| 24 | Stetten · AG | 39.9 | 399 | very hard |
| 25 | Aadorf · TG | 39.8 | 398 | very hard |
25 cities with the softest water
| # | °fH | mg/L | ||
|---|---|---|---|---|
| 1 | Bottighofen · TG | 1.6 | 16 | soft |
| 2 | Göschenen · UR | 1.6 | 16 | soft |
| 3 | Locarno · TI | 2 | 20 | soft |
| 4 | Brissago · TI | 2.1 | 21 | soft |
| 5 | Bellwald · VS | 2.4 | 24 | soft |
| 6 | Rütschelen · BE | 2.6 | 26 | soft |
| 7 | Orvin · BE | 2.9 | 29 | soft |
| 8 | Bellinzona · TI | 3.1 | 32 | soft |
| 9 | Zernez · GR | 3.2 | 32 | soft |
| 10 | Massagno · TI | 4.1 | 41 | soft |
| 11 | Bettmeralp · VS | 4.2 | 42 | soft |
| 12 | Naters · VS | 4.5 | 45 | soft |
| 13 | Disentis/Mustér · GR | 4.9 | 49 | soft |
| 14 | Obergoms · VS | 5 | 50 | soft |
| 15 | Mesocco · GR | 5.7 | 57 | soft |
| 16 | Falera · GR | 6 | 60 | soft |
| 17 | Anniviers · VS | 6.1 | 61 | moderately hard |
| 18 | St. Niklaus · VS | 6.2 | 62 | moderately hard |
| 19 | Quarten · SG | 7.2 | 72 | moderately hard |
| 20 | Brig-Glis · VS | 7.2 | 72 | moderately hard |
| 21 | Erstfeld · UR | 8.2 | 82 | moderately hard |
| 22 | Pura · TI | 8.6 | 86 | moderately hard |
| 23 | Collina d'Oro · TI | 8.9 | 89 | moderately hard |
| 24 | Cadempino · TI | 9 | 90 | moderately hard |
| 25 | Davos · GR | 9.4 | 94 | moderately hard |