Tap water hardness in Limburg
We have published hardness data for 6 cities in Limburg. The median is 8.3 °dH; the hardest water is in Roermond (10.8 °dH), the softest in Kerkrade (3.5 °dH).
67 % of these cities have hard or very hard water (over 120 mg/L).
Dutch suppliers report °dH; most networks are softened centrally to 5.6–8.4 °dH.
Cities in Limburg, hardest first
| °dH | mg/L | ||
|---|---|---|---|
| Roermond | 10.8 | 193 | very hard |
| Venray | 9.9 | 178 | hard |
| Sittard | 8.7 | 155 | hard |
| Weert | 7.9 | 141 | hard |
| Brunssum | 5.6 | 100 | moderately hard |
| Kerkrade | 3.5 | 63 | moderately hard |