Tap water hardness in Vlaams-Brabant
We have published hardness data for 59 cities in Vlaams-Brabant. The median is 26.6 °fH; the hardest water is in Bever (44.7 °fH), the softest in Diest (14 °fH).
100 % 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 Vlaams-Brabant, hardest first
| °fH | mg/L | ||
|---|---|---|---|
| Bever | 44.7 | 447 | very hard |
| Herne | 44.7 | 447 | very hard |
| Galmaarden | 43.1 | 431 | very hard |
| Landen | 42.8 | 428 | very hard |
| Gooik | 41.6 | 416 | very hard |
| Hoeilaart | 40.2 | 402 | very hard |
| Overijse | 39.9 | 399 | very hard |
| Bertem | 39.3 | 393 | very hard |
| Halle | 39.1 | 391 | very hard |
| Huldenberg | 38 | 380 | very hard |
| Beersel | 37.6 | 376 | very hard |
| Tienen | 37.1 | 371 | very hard |
| Machelen | 36.5 | 365 | very hard |
| Vilvoorde | 36.3 | 363 | very hard |
| Tervuren | 35.1 | 351 | very hard |
| Kortenberg | 33.7 | 337 | very hard |
| Kampenhout | 32.5 | 325 | very hard |
| Geetbets | 32 | 320 | very hard |
| Grimbergen | 31 | 310 | very hard |
| Kraainem | 31 | 310 | very hard |
| Steenokkerzeel | 31 | 310 | very hard |
| Wezembeek-Oppem | 31 | 310 | very hard |
| Zaventem | 31 | 310 | very hard |
| Liedekerke | 29.2 | 292 | very hard |
| Ternat | 29.2 | 292 | very hard |
| Haacht | 28.6 | 286 | very hard |
| Herent | 28.6 | 286 | very hard |
| Tremelo | 28.6 | 286 | very hard |
| Boortmeerbeek | 27.6 | 276 | very hard |
| Rotselaar | 26.6 | 266 | very hard |
| Glabbeek | 25.8 | 258 | very hard |
| Sint-Genesius-Rode | 25 | 250 | very hard |
| Boutersem | 23.8 | 238 | very hard |
| Keerbergen | 23 | 230 | very hard |
| Londerzeel | 22.2 | 222 | very hard |
| Zoutleeuw | 20.3 | 203 | very hard |
| Leuven | 19.9 | 199 | very hard |
| Begijnendijk | 18.5 | 185 | very hard |
| Merchtem | 18.4 | 184 | very hard |
| Zemst | 18.4 | 184 | very hard |
| Kortenaken | 18.4 | 184 | very hard |
| Hoegaarden | 18.3 | 183 | very hard |
| Meise | 18.2 | 182 | very hard |
| Lubbeek | 18.1 | 181 | very hard |
| Holsbeek | 18 | 180 | hard |
| Kapelle-op-den-Bos | 17.9 | 180 | hard |
| Aarschot | 17.9 | 179 | hard |
| Bierbeek | 17.9 | 179 | hard |
| Tielt-Winge | 17.7 | 177 | hard |
| Opwijk | 17.2 | 172 | hard |
| Oud-Heverlee | 17.1 | 171 | hard |
| Dilbeek | 16.9 | 169 | hard |
| Asse | 16.8 | 168 | hard |
| Drogenbos | 16.8 | 168 | hard |
| Linkebeek | 16.8 | 168 | hard |
| Wemmel | 16.8 | 168 | hard |
| Bekkevoort | 16.5 | 165 | hard |
| Sint-Pieters-Leeuw | 16.5 | 165 | hard |
| Diest | 14 | 140 | hard |