Water hardness in Germany
809 cities with published hardness data, sorted by population. Median: 11.5 °dH.
Median
11.5 °dH
205 mg/L CaCO₃ · very hard
- 19 soft
- 134 moderately hard
- 176 hard
- 480 very hard
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water hardness by postcode in Germany
Ranking of the hardest and softest water in Germany →
Regions
- Baden-Württemberg146 · 12.8 °dH
- Bayern137 · 15.8 °dH
- Brandenburg15 · 16 °dH
- Hessen73 · 10.7 °dH
- Mecklenburg-Vorpommern7 · 17.2 °dH
- Niedersachsen94 · 7 °dH
- Nordrhein-Westfalen153 · 11.3 °dH
- Rheinland-Pfalz25 · 9.9 °dH
- Saarland11 · 7.9 °dH
- Sachsen38 · 5.2 °dH
- Sachsen-Anhalt10 · 17.1 °dH
- Schleswig-Holstein26 · 12 °dH
- Thüringen8 · 16.5 °dH
Largest places, hardest first
Every place is listed on its region page.
| °dH | mg/L | ||
|---|---|---|---|
| Würzburg · Bayern | 40.4 | 721 | very hard |
| Dessau-Roßlau · Sachsen-Anhalt | 22 | 393 | very hard |
| Minden · Nordrhein-Westfalen | 21.7 | 387 | very hard |
| Ingolstadt · Bayern | 20.8 | 371 | very hard |
| Landshut · Bayern | 20.2 | 361 | very hard |
| Mannheim · Baden-Württemberg | 20 | 357 | very hard |
| Mainz · Rheinland-Pfalz | 19.3 | 345 | very hard |
| Darmstadt · Hessen | 19.1 | 341 | very hard |
| Ratingen · Nordrhein-Westfalen | 19.1 | 341 | very hard |
| Potsdam · Brandenburg | 19 | 339 | very hard |
| Karlsruhe · Baden-Württemberg | 18.4 | 329 | very hard |
| Berlin · Berlin | 18.4 | 328 | very hard |
| Bamberg · Bayern | 17.9 | 320 | very hard |
| Regensburg · Bayern | 16.9 | 302 | very hard |
| Cologne · Nordrhein-Westfalen | 16.9 | 301 | very hard |
| Kiel · Schleswig-Holstein | 16.9 | 301 | very hard |
| Lübeck · Schleswig-Holstein | 16.3 | 292 | very hard |
| Jena · Thüringen | 16 | 286 | very hard |
| Paderborn · Nordrhein-Westfalen | 15.9 | 285 | very hard |
| Hanau · Hessen | 15.9 | 284 | very hard |
| Munich · Bayern | 15.8 | 282 | very hard |
| Neuss · Nordrhein-Westfalen | 15 | 268 | very hard |
| Düsseldorf · Nordrhein-Westfalen | 15 | 268 | very hard |
| Fürth · Bayern | 15 | 267 | very hard |
| Magdeburg · Sachsen-Anhalt | 14.3 | 255 | very hard |
| Leipzig · Sachsen | 14.1 | 252 | very hard |
| Münster · Nordrhein-Westfalen | 13.8 | 246 | very hard |
| Mönchengladbach · Nordrhein-Westfalen | 13.5 | 241 | very hard |
| Bocholt · Nordrhein-Westfalen | 13.5 | 241 | very hard |
| Dorsten · Nordrhein-Westfalen | 13.5 | 241 | very hard |
| Gladbeck · Nordrhein-Westfalen | 13.5 | 241 | very hard |
| Ulm · Baden-Württemberg | 13.4 | 239 | very hard |
| Augsburg · Bayern | 13.2 | 236 | very hard |
| Moers · Nordrhein-Westfalen | 13.2 | 236 | very hard |
| Krefeld · Nordrhein-Westfalen | 13 | 232 | very hard |
| Bielefeld · Nordrhein-Westfalen | 12.8 | 229 | very hard |
| Aalen · Baden-Württemberg | 12.8 | 228 | very hard |
| Ludwigshafen am Rhein · Rheinland-Pfalz | 12.6 | 226 | very hard |
| Tübingen · Baden-Württemberg | 12.6 | 226 | very hard |
| Viersen · Nordrhein-Westfalen | 12.6 | 225 | very hard |
| Duisburg · Nordrhein-Westfalen | 12.5 | 223 | very hard |
| Aschaffenburg · Bayern | 12.4 | 221 | very hard |
| Neumünster · Schleswig-Holstein | 12.3 | 220 | very hard |
| Frankfurt am Main · Hessen | 12.2 | 218 | very hard |
| Nuremberg · Bayern | 12.1 | 215 | very hard |
| Hannover · Niedersachsen | 12 | 214 | very hard |
| Erlangen · Bayern | 11.9 | 212 | very hard |
| Iserlohn · Nordrhein-Westfalen | 11.8 | 211 | very hard |
| Hamburg · Hamburg | 11.7 | 209 | very hard |
| Offenbach am Main · Hessen | 11.7 | 209 | very hard |
| Norderstedt · Schleswig-Holstein | 11.6 | 208 | very hard |
| Leverkusen · Nordrhein-Westfalen | 11.4 | 204 | very hard |
| Heilbronn · Baden-Württemberg | 11.4 | 204 | very hard |
| Recklinghausen · Nordrhein-Westfalen | 11.3 | 202 | very hard |
| Marl · Nordrhein-Westfalen | 11.3 | 202 | very hard |
| Ludwigsburg · Baden-Württemberg | 11.2 | 201 | very hard |
| Detmold · Nordrhein-Westfalen | 11.1 | 198 | very hard |
| Dinslaken · Nordrhein-Westfalen | 11.1 | 198 | very hard |
| Stuttgart · Baden-Württemberg | 11 | 196 | very hard |
| Kassel · Hessen | 10.9 | 195 | very hard |
| Oberhausen · Nordrhein-Westfalen | 10.8 | 192 | very hard |
| Bottrop · Nordrhein-Westfalen | 10.8 | 192 | very hard |
| Rendsburg · Schleswig-Holstein | 10.6 | 190 | very hard |
| Marburg · Hessen | 10.5 | 187 | very hard |
| Gelsenkirchen · Nordrhein-Westfalen | 9.5 | 170 | hard |
| Bremerhaven · Bremen | 9.5 | 170 | hard |
| Herne · Nordrhein-Westfalen | 9.3 | 166 | hard |
| Castrop-Rauxel · Nordrhein-Westfalen | 9.3 | 166 | hard |
| Konstanz · Baden-Württemberg | 9.2 | 164 | hard |
| Gießen · Hessen | 9.1 | 163 | hard |
| Braunschweig · Niedersachsen | 8.4 | 150 | hard |
| Mülheim an der Ruhr · Nordrhein-Westfalen | 8.3 | 148 | hard |
| Aachen · Nordrhein-Westfalen | 7.8 | 140 | hard |
| Flensburg · Schleswig-Holstein | 7.8 | 140 | hard |
| Hamm · Nordrhein-Westfalen | 7.8 | 139 | hard |
| Lünen · Nordrhein-Westfalen | 7.8 | 139 | hard |
| Bremen · Bremen | 7.7 | 138 | hard |
| Dortmund · Nordrhein-Westfalen | 7.7 | 137 | hard |
| Dresden · Sachsen | 7.7 | 137 | hard |
| Arnsberg · Nordrhein-Westfalen | 7.6 | 136 | hard |
| Velbert · Nordrhein-Westfalen | 7.5 | 134 | hard |
| Bochum · Nordrhein-Westfalen | 7.5 | 133 | hard |
| Delmenhorst · Niedersachsen | 7.4 | 131 | hard |
| Hagen · Nordrhein-Westfalen | 7.2 | 129 | hard |
| Göttingen · Niedersachsen | 7 | 124 | hard |
| Essen · Nordrhein-Westfalen | 6.6 | 118 | moderately hard |
| Celle · Niedersachsen | 6.6 | 117 | moderately hard |
| Düren · Nordrhein-Westfalen | 6.4 | 115 | moderately hard |
| Saarbrücken · Saarland | 6.2 | 111 | moderately hard |
| Wilhelmshaven · Niedersachsen | 5.7 | 102 | moderately hard |
| Bonn · Nordrhein-Westfalen | 5.6 | 99 | moderately hard |
| Wuppertal · Nordrhein-Westfalen | 5.5 | 98 | moderately hard |
| Bayreuth · Bayern | 5.5 | 98 | moderately hard |
| Kaiserslautern · Rheinland-Pfalz | 5.4 | 96 | moderately hard |
| Troisdorf · Nordrhein-Westfalen | 5.4 | 96 | moderately hard |
| Haan · Nordrhein-Westfalen | 5.4 | 96 | moderately hard |
| Remscheid · Nordrhein-Westfalen | 5.1 | 91 | moderately hard |
| Freiburg im Breisgau · Baden-Württemberg | 4.9 | 88 | moderately hard |
| Lüdenscheid · Nordrhein-Westfalen | 2.8 | 50 | soft |
| Hildesheim · Niedersachsen | 1.8 | 32 | soft |