Tap water hardness in Stockholm
We have published hardness data for 8 cities in Stockholm. The median is 5.6 °dH; the hardest water is in Danderyd (6.3 °dH), the softest in Haninge (4.7 °dH).
0 % of these cities have hard or very hard water (over 120 mg/L).
Swedish municipalities report °dH; most surface-water supplies are soft.
Cities in Stockholm, hardest first
| °dH | mg/L | ||
|---|---|---|---|
| Danderyd | 6.3 | 113 | moderately hard |
| Sollentuna | 6.3 | 113 | moderately hard |
| Upplands Väsby | 6.3 | 113 | moderately hard |
| Vallentuna | 6.3 | 113 | moderately hard |
| Rinkeby | 5 | 89 | moderately hard |
| Trångsund | 5 | 89 | moderately hard |
| Nacka | 4.8 | 86 | moderately hard |
| Haninge | 4.7 | 84 | moderately hard |