Tap water hardness in kujawsko-pomorskie
We have published hardness data for 4 cities in kujawsko-pomorskie. The median is 314 mg/L; the hardest water is in Fordon (404 mg/L), the softest in Bydgoszcz (234 mg/L).
100 % of these cities have hard or very hard water (over 120 mg/L).
Polish suppliers report total hardness in mg/L CaCO₃; the drinking-water regulation range is 60–500 mg/L.
Cities in kujawsko-pomorskie, hardest first
| mg/L | mg/L | ||
|---|---|---|---|
| Fordon | 404 | 404 | very hard |
| Grudziądz | 359 | 359 | very hard |
| Włocławek | 268 | 268 | very hard |
| Bydgoszcz | 234 | 234 | very hard |