Tap water hardness in Baden-Württemberg
We have published hardness data for 146 cities in Baden-Württemberg. The median is 12.8 °dH; the hardest water is in Nußloch (31.6 °dH), the softest in Münstertal (Schwarzwald) (1.9 °dH).
89 % of these cities have hard or very hard water (over 120 mg/L).
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Cities in Baden-Württemberg, hardest first
| °dH | mg/L | ||
|---|---|---|---|
| Nußloch | 31.6 | 564 | very hard |
| Vaihingen an der Enz | 28 | 500 | very hard |
| Beilstein | 23 | 411 | very hard |
| Radolfzell am Bodensee | 22.6 | 403 | very hard |
| Wiesloch | 22.3 | 399 | very hard |
| Rheinfelden (Baden) | 22 | 392 | very hard |
| Ladenburg | 21.9 | 391 | very hard |
| Stühlingen | 21.6 | 386 | very hard |
| Bad Saulgau | 21.2 | 378 | very hard |
| Kenzingen | 21.2 | 378 | very hard |
| Reilingen | 20.3 | 362 | very hard |
| Schwetzingen | 20.2 | 360 | very hard |
| Ilvesheim | 20 | 357 | very hard |
| Mannheim | 20 | 357 | very hard |
| Sinsheim | 19.8 | 354 | very hard |
| Wutöschingen | 19.8 | 354 | very hard |
| Großbottwar | 19.7 | 352 | very hard |
| Biberach an der Riß | 19.5 | 348 | very hard |
| Neresheim | 19.5 | 348 | very hard |
| Hambrücken | 19.2 | 343 | very hard |
| Schwendi | 19 | 340 | very hard |
| Meßkirch | 18.8 | 336 | very hard |
| Dossenheim | 18.7 | 334 | very hard |
| Sersheim | 18.6 | 332 | very hard |
| Karlsruhe | 18.4 | 329 | very hard |
| Geislingen an der Steige | 18.3 | 327 | very hard |
| Rauenberg | 18.1 | 323 | very hard |
| Bretten | 18 | 321 | very hard |
| Leutkirch im Allgäu | 17.8 | 318 | very hard |
| Laupheim | 17.7 | 316 | very hard |
| Sankt Leon-Rot | 17.6 | 314 | very hard |
| Winterbach | 17.4 | 311 | very hard |
| Bietigheim-Bissingen | 17.3 | 309 | very hard |
| Mainhardt | 17.3 | 309 | very hard |
| Rheinstetten | 17.2 | 307 | very hard |
| Heidenheim an der Brenz | 17.2 | 307 | very hard |
| Wendlingen am Neckar | 17 | 304 | very hard |
| Winterlingen | 17 | 304 | very hard |
| Pfullendorf | 16.7 | 298 | very hard |
| Oedheim | 16.6 | 296 | very hard |
| Balingen | 16.5 | 295 | very hard |
| Haiterbach | 16.5 | 295 | very hard |
| Schwaikheim | 16.5 | 295 | very hard |
| Sindelfingen | 16.5 | 295 | very hard |
| Malsch | 16.3 | 291 | very hard |
| Hechingen | 16.2 | 288 | very hard |
| Bräunlingen | 16.1 | 287 | very hard |
| Wangen im Allgäu | 16.1 | 287 | very hard |
| Ilsfeld | 15.9 | 284 | very hard |
| Niedereschach | 15.9 | 284 | very hard |
| Öhringen | 15.5 | 276 | very hard |
| Durmersheim | 15.4 | 275 | very hard |
| Dettingen an der Erms | 15.3 | 273 | very hard |
| Rechberghausen | 15.2 | 271 | very hard |
| Weinheim | 15.1 | 270 | very hard |
| Müllheim | 15 | 268 | very hard |
| Schwäbisch Hall | 14.9 | 266 | very hard |
| Dielheim | 14.7 | 262 | very hard |
| Baienfurt | 14.3 | 255 | very hard |
| Göppingen | 14.3 | 254 | very hard |
| Wildberg | 14 | 250 | very hard |
| Lenningen | 13.9 | 249 | very hard |
| Ebersbach an der Fils | 13.8 | 246 | very hard |
| Neuenstein | 13.8 | 246 | very hard |
| Ochsenhausen | 13.7 | 245 | very hard |
| Nordheim | 13.5 | 241 | very hard |
| Untergruppenbach | 13.5 | 241 | very hard |
| Abtsgmünd | 13.4 | 239 | very hard |
| Kirchheim unter Teck | 13.4 | 239 | very hard |
| Ulm | 13.4 | 239 | very hard |
| Reichenbach an der Fils | 13.3 | 237 | very hard |
| Heubach | 13 | 232 | very hard |
| Pliezhausen | 12.8 | 229 | very hard |
| Aalen | 12.8 | 228 | very hard |
| Crailsheim | 12.7 | 227 | very hard |
| Tübingen | 12.6 | 226 | very hard |
| Bodelshausen | 12.6 | 225 | very hard |
| Ilshofen | 12.6 | 225 | very hard |
| Metzingen | 12 | 214 | very hard |
| Löffingen | 11.9 | 212 | very hard |
| Heilbronn | 11.4 | 204 | very hard |
| Hemmingen | 11.4 | 204 | very hard |
| Alfdorf | 11.4 | 203 | very hard |
| Kornwestheim | 11.3 | 201 | very hard |
| Ludwigsburg | 11.2 | 201 | very hard |
| Fellbach | 11.1 | 199 | very hard |
| Laufenburg (Baden) | 11.1 | 198 | very hard |
| Stuttgart | 11 | 196 | very hard |
| Wiernsheim | 11 | 196 | very hard |
| Murg | 10.9 | 195 | very hard |
| Mosbach | 10.9 | 195 | very hard |
| Tuttlingen | 10.9 | 195 | very hard |
| Aidlingen | 10.9 | 195 | very hard |
| Ditzingen | 10.9 | 195 | very hard |
| Hohberg | 10.6 | 189 | very hard |
| Osterburken | 10.6 | 189 | very hard |
| Muggensturm | 10.2 | 182 | very hard |
| Wolfschlugen | 10.1 | 180 | very hard |
| Adelsheim | 9.7 | 174 | hard |
| Herbolzheim | 9.7 | 173 | hard |
| Bopfingen | 9.6 | 171 | hard |
| Königsbach-Stein | 9.4 | 167 | hard |
| Friedrichshafen | 9.2 | 164 | hard |
| Gerlingen | 9.2 | 164 | hard |
| Konstanz | 9.2 | 164 | hard |
| Maulbronn | 9.1 | 163 | hard |
| Albstadt | 9.1 | 163 | hard |
| Eningen unter Achalm | 9.1 | 163 | hard |
| Flein | 9.1 | 163 | hard |
| Steinenbronn | 9.1 | 163 | hard |
| Waldenbuch | 9.1 | 163 | hard |
| Buchen in Odenwald | 9.1 | 162 | hard |
| Filderstadt | 9.1 | 162 | hard |
| Kuppenheim | 9.1 | 162 | hard |
| Überlingen | 9.1 | 162 | hard |
| Besigheim | 9 | 161 | hard |
| Kressbronn am Bodensee | 9 | 161 | hard |
| Löchgau | 9 | 161 | hard |
| Nürtingen | 9 | 161 | hard |
| Ostfildern | 9 | 160 | hard |
| Walldürn | 9 | 160 | hard |
| Knittlingen | 8.9 | 159 | hard |
| Leonberg | 8.9 | 159 | hard |
| Emmendingen | 8.7 | 155 | hard |
| Rutesheim | 8.1 | 145 | hard |
| Renningen | 8 | 143 | hard |
| Karlsdorf-Neuthard | 7.9 | 141 | hard |
| Neuffen | 7.6 | 135 | hard |
| Gaggenau | 7.5 | 134 | hard |
| Teningen | 7 | 125 | hard |
| Oberkirch | 6.5 | 117 | moderately hard |
| Bühl (Baden) | 6.2 | 110 | moderately hard |
| Willstätt | 6 | 107 | moderately hard |
| Baden-Baden | 5.9 | 105 | moderately hard |
| Gengenbach | 5.3 | 95 | moderately hard |
| Freiburg im Breisgau | 4.9 | 88 | moderately hard |
| Steinen | 4.4 | 78 | moderately hard |
| Lahr/Schwarzwald | 4.2 | 75 | moderately hard |
| Alpirsbach | 4.2 | 75 | moderately hard |
| Neubulach | 3.5 | 62 | moderately hard |
| Bad Wildbad | 3.4 | 61 | moderately hard |
| Wolfach | 3.3 | 59 | soft |
| Haslach im Kinzigtal | 3.2 | 57 | soft |
| Waldkirch | 2.5 | 45 | soft |
| Eberbach | 2.1 | 38 | soft |
| Münstertal (Schwarzwald) | 1.9 | 34 | soft |