Tap water hardness in Niedersachsen
We have published hardness data for 94 cities in Niedersachsen. The median is 7 °dH; the hardest water is in Rinteln (28.5 °dH), the softest in Hildesheim (1.8 °dH).
67 % 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 Niedersachsen, hardest first
| °dH | mg/L | ||
|---|---|---|---|
| Rinteln | 28.5 | 509 | very hard |
| Coppenbrügge | 27.9 | 498 | very hard |
| Hameln | 27.8 | 496 | very hard |
| Northeim | 25.9 | 462 | very hard |
| Bad Rothenfelde | 19.3 | 345 | very hard |
| Aerzen | 19.1 | 341 | very hard |
| Katlenburg-Lindau | 18.9 | 337 | very hard |
| Einbeck | 15.8 | 282 | very hard |
| Garbsen | 14.5 | 259 | very hard |
| Bremervörde | 14.4 | 257 | very hard |
| Alfeld | 12.8 | 229 | very hard |
| Lilienthal | 12.5 | 223 | very hard |
| Hannover | 12 | 214 | very hard |
| Isernhagen Farster Bauerschaft | 12 | 214 | very hard |
| Sahlkamp | 11.8 | 210 | very hard |
| Hansestadt Stade | 11.5 | 205 | very hard |
| Bad Iburg | 10.7 | 191 | very hard |
| Burgdorf | 10.7 | 191 | very hard |
| Uelzen | 10 | 179 | hard |
| Emden | 9.9 | 177 | hard |
| Herzberg am Harz | 9.9 | 177 | hard |
| Lingen (Ems) | 9.6 | 171 | hard |
| Schladen (Schladen-Werla) | 8.5 | 152 | hard |
| Braunschweig | 8.4 | 150 | hard |
| Verden | 8.4 | 150 | hard |
| Bassum | 8.2 | 146 | hard |
| Meppen | 7.8 | 139 | hard |
| Goldenstedt | 7.7 | 137 | hard |
| Harpstedt | 7.7 | 137 | hard |
| Twistringen | 7.7 | 137 | hard |
| Laatzen | 7.6 | 136 | hard |
| Stuhr | 7.6 | 136 | hard |
| Jade | 7.5 | 134 | hard |
| Langeoog | 7.4 | 132 | hard |
| Bakum | 7.4 | 131 | hard |
| Delmenhorst | 7.4 | 131 | hard |
| Dötlingen | 7.4 | 131 | hard |
| Ganderkesee | 7.4 | 131 | hard |
| Großenkneten | 7.4 | 131 | hard |
| Visbek | 7.4 | 131 | hard |
| Wildeshausen | 7.4 | 131 | hard |
| Seelze | 7.3 | 130 | hard |
| Cuxhaven | 7.2 | 129 | hard |
| Butjadingen | 7 | 125 | hard |
| Elsfleth | 7 | 125 | hard |
| Emstek | 7 | 125 | hard |
| Hatten | 7 | 125 | hard |
| Hude | 7 | 125 | hard |
| Lemwerder | 7 | 125 | hard |
| Ovelgönne | 7 | 125 | hard |
| Göttingen | 7 | 124 | hard |
| Lohne | 6.9 | 123 | hard |
| Cappeln | 6.8 | 121 | hard |
| Cloppenburg | 6.8 | 121 | hard |
| Damme | 6.8 | 121 | hard |
| Dinklage | 6.8 | 121 | hard |
| Garrel | 6.8 | 121 | hard |
| Lastrup | 6.8 | 121 | hard |
| Löningen | 6.8 | 121 | hard |
| Molbergen | 6.8 | 121 | hard |
| Rastede | 6.8 | 121 | hard |
| Steinfeld | 6.8 | 121 | hard |
| Wardenburg | 6.8 | 121 | hard |
| Holdorf | 6.7 | 120 | moderately hard |
| Bad Zwischenahn | 6.6 | 118 | moderately hard |
| Barßel | 6.6 | 118 | moderately hard |
| Bösel | 6.6 | 118 | moderately hard |
| Edewecht | 6.6 | 118 | moderately hard |
| Friesoythe | 6.6 | 118 | moderately hard |
| Wiefelstede | 6.6 | 118 | moderately hard |
| Celle | 6.6 | 117 | moderately hard |
| Osterholz-Scharmbeck | 6.5 | 116 | moderately hard |
| Brake (Unterweser) | 6.4 | 114 | moderately hard |
| Nordenham | 6.4 | 114 | moderately hard |
| Apen | 6.3 | 112 | moderately hard |
| Buchholz in der Nordheide | 6.1 | 109 | moderately hard |
| Westerstede | 6 | 107 | moderately hard |
| Bockhorn | 5.8 | 104 | moderately hard |
| Jever | 5.7 | 102 | moderately hard |
| Schortens | 5.7 | 102 | moderately hard |
| Wangerooge | 5.7 | 102 | moderately hard |
| Wilhelmshaven | 5.7 | 102 | moderately hard |
| Wittmund | 5.7 | 102 | moderately hard |
| Dornum | 5.6 | 100 | moderately hard |
| Esens | 5.6 | 100 | moderately hard |
| Friedeburg | 5.6 | 100 | moderately hard |
| Sande | 5.6 | 100 | moderately hard |
| Wiesmoor | 5.6 | 100 | moderately hard |
| Aurich | 5.3 | 95 | moderately hard |
| Mittegroßefehn | 5.3 | 95 | moderately hard |
| Hinte | 5.3 | 95 | moderately hard |
| Werlte | 4.8 | 85 | moderately hard |
| Liebenburg | 2.8 | 50 | soft |
| Hildesheim | 1.8 | 32 | soft |