Tap water hardness in małopolskie
We have published hardness data for 5 cities in małopolskie. The median is 265 mg/L; the hardest water is in Kraków (306 mg/L), the softest in Oświęcim (221 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 małopolskie, hardest first
| mg/L | mg/L | ||
|---|---|---|---|
| Kraków | 306 | 306 | very hard |
| Chrzanów | 297 | 297 | very hard |
| Nowy Sącz | 265 | 265 | very hard |
| Olkusz | 259 | 259 | very hard |
| Oświęcim | 221 | 221 | very hard |