Tap water hardness in 01
We have published hardness data for 6 cities in 01. The median is 4.2 °dH; the hardest water is in Nurmijärvi (5.1 °dH), the softest in Kerava (3.5 °dH).
0 % of these cities have hard or very hard water (over 120 mg/L).
Finnish waterworks report hardness in °dH; most supplies are soft.
Cities in 01, hardest first
| °dH | mg/L | ||
|---|---|---|---|
| Nurmijärvi | 5.1 | 92 | moderately hard |
| Hyvinkää | 4.2 | 75 | moderately hard |
| Tuusula | 4.2 | 75 | moderately hard |
| Lohja | 4.1 | 73 | moderately hard |
| Järvenpää | 3.7 | 67 | moderately hard |
| Kerava | 3.5 | 63 | moderately hard |