EU Hardness Classification Chart
Translate your municipality's water report into the exact settings required by your household appliances.
Appliance Setup Notice: Most European dishwashers and washing machines (Bosch, Miele, Electrolux) require you to input your water hardness to properly dose anti-scaling salt. Use this chart to convert your local mg/L reading into the degree system your appliance manufacturer uses.
| Classification | International (mg/L / ppm) | German (°dH) | French (°fH) | English / Clark (°e) |
|---|---|---|---|---|
| Soft | 0 - 60 | 0 - 3.3 | 0 - 6.0 | 0 - 4.2 |
| Moderately Hard | 61 - 120 | 3.4 - 6.7 | 6.1 - 12.0 | 4.3 - 8.4 |
| Hard | 121 - 180 | 6.8 - 10.0 | 12.1 - 18.0 | 8.5 - 12.6 |
| Very Hard | 181+ | 10.1+ | 18.1+ | 12.7+ |