Tap water hardness in Limburg
We have published hardness data for 33 cities in Limburg. The median is 16.5 °fH; the hardest water is in Borgloon (36.2 °fH), the softest in Overpelt (6.2 °fH).
64 % of these cities have hard or very hard water (over 120 mg/L).
Belgian suppliers report hardness in °f (French degrees); 1 °f = 10 mg/L CaCO₃.
Cities in Limburg, hardest first
| °fH | mg/L | ||
|---|---|---|---|
| Borgloon | 36.2 | 362 | very hard |
| Wellen | 36.2 | 362 | very hard |
| Kortessem | 34.8 | 348 | very hard |
| Hoeselt | 34.7 | 347 | very hard |
| Heers | 33.9 | 339 | very hard |
| Tongeren | 33.9 | 339 | very hard |
| Herk-de-Stad | 32.2 | 322 | very hard |
| Sint-Truiden | 27 | 270 | very hard |
| Alken | 25.3 | 253 | very hard |
| Gingelom | 21.7 | 217 | very hard |
| Hasselt | 19.8 | 198 | very hard |
| Diepenbeek | 18.5 | 185 | very hard |
| Zutendaal | 18.4 | 184 | very hard |
| Mechelen-aan-de-Maas | 17.3 | 173 | hard |
| Lanaken | 17 | 170 | hard |
| Bilzen | 16.5 | 165 | hard |
| Genk | 16.5 | 165 | hard |
| Halen | 16.5 | 165 | hard |
| Maasmechelen | 15.8 | 158 | hard |
| Riemst | 13.7 | 137 | hard |
| Kinrooi | 12.3 | 123 | hard |
| As | 11.6 | 116 | moderately hard |
| Leopoldsburg | 11.6 | 116 | moderately hard |
| Zonhoven | 11.6 | 116 | moderately hard |
| Beringen | 11.4 | 114 | moderately hard |
| Lummen | 11.4 | 114 | moderately hard |
| Tessenderlo | 11.4 | 114 | moderately hard |
| Maaseik | 11.2 | 112 | moderately hard |
| Lommel | 8.4 | 84 | moderately hard |
| Bree | 7.5 | 75 | moderately hard |
| Peer | 7.5 | 75 | moderately hard |
| Bocholt | 7 | 70 | moderately hard |
| Overpelt | 6.2 | 62 | moderately hard |