Tap water hardness in Guipúzcoa
We have published hardness data for 86 cities in Guipúzcoa. The median is 15.3 °fH; the hardest water is in Beizama (22.4 °fH), the softest in Berastegi (1.3 °fH).
72 % of these cities have hard or very hard water (over 120 mg/L).
Cities in Guipúzcoa, hardest first
| °fH | mg/L | ||
|---|---|---|---|
| Beizama | 22.4 | 224 | very hard |
| Aizarnazabal | 20.9 | 209 | very hard |
| Asteasu | 20.7 | 207 | very hard |
| Bidania-Goiatz | 20.5 | 205 | very hard |
| Gaintza | 19.5 | 195 | very hard |
| Lizartza | 19.4 | 194 | very hard |
| Zegama | 19.1 | 192 | very hard |
| Errezil | 19 | 190 | very hard |
| Belauntza | 18.5 | 185 | very hard |
| Orexa | 18.3 | 183 | very hard |
| Irura | 18.2 | 182 | very hard |
| Ikaztegieta | 17.9 | 179 | hard |
| Zizurkil | 17.7 | 177 | hard |
| Aduna | 17.5 | 175 | hard |
| Hernialde | 17.5 | 175 | hard |
| Larraul | 17.5 | 175 | hard |
| Ordizia | 17.5 | 175 | hard |
| Altzo | 17.4 | 174 | hard |
| Arama | 17.3 | 173 | hard |
| Legorreta | 17.3 | 173 | hard |
| Beasain | 17.3 | 173 | hard |
| Leaburu | 17.2 | 172 | hard |
| Orio | 16.9 | 170 | hard |
| Albiztur | 16.8 | 168 | hard |
| Alegia | 16.8 | 168 | hard |
| Altzaga | 16.6 | 166 | hard |
| Ibarra | 16.5 | 165 | hard |
| Villabona | 16.5 | 165 | hard |
| Andoain | 16.3 | 163 | hard |
| Anoeta | 16.3 | 163 | hard |
| Berrobi | 16.1 | 161 | hard |
| Eibar | 16.1 | 161 | hard |
| Elgeta | 16.1 | 161 | hard |
| Soraluze / Placencia de las Armas | 16.1 | 161 | hard |
| Tolosa | 16.1 | 161 | hard |
| Orendain | 16 | 160 | hard |
| Aretxabaleta | 15.8 | 158 | hard |
| Idiazabal | 15.7 | 157 | hard |
| Lazkao | 15.7 | 157 | hard |
| Segura | 15.7 | 157 | hard |
| Aia | 15.6 | 156 | hard |
| Deba | 15.3 | 153 | hard |
| Eskoriatza | 15.3 | 153 | hard |
| Getaria | 15.3 | 153 | hard |
| Abaltzisketa | 15.2 | 152 | hard |
| Antzuola | 15 | 150 | hard |
| Elgoibar | 15 | 150 | hard |
| Azkoitia | 14.8 | 148 | hard |
| Mendaro | 14.8 | 148 | hard |
| Olaberria | 14.8 | 148 | hard |
| Itsasondo | 14.6 | 146 | hard |
| Zumaia | 14.6 | 146 | hard |
| Bergara | 14.4 | 145 | hard |
| Zestoa | 14.4 | 145 | hard |
| Zarautz | 14.4 | 144 | hard |
| Azpeitia | 14.3 | 143 | hard |
| Mutriku | 14.2 | 142 | hard |
| Baliarrain | 13.9 | 139 | hard |
| Amezketa | 13.6 | 136 | hard |
| Oñati | 13.2 | 132 | hard |
| Zaldibia | 13 | 130 | hard |
| Ataun | 12.7 | 127 | hard |
| Leintz-Gatzaga | 10.4 | 104 | moderately hard |
| Zumarraga | 9.7 | 97 | moderately hard |
| Gaztelu | 9.1 | 91 | moderately hard |
| Pasaia | 7.5 | 76 | moderately hard |
| Irun | 7.5 | 75 | moderately hard |
| Hondarribia | 7.1 | 71 | moderately hard |
| Urretxu | 7.1 | 71 | moderately hard |
| Zerain | 7 | 71 | moderately hard |
| Ezkio-Itsaso | 6.7 | 67 | moderately hard |
| Legazpi | 6.7 | 67 | moderately hard |
| Gabiria | 6 | 60 | soft |
| Alkiza | 5.9 | 59 | soft |
| Mutiloa | 5.7 | 57 | soft |
| Lasarte-Oria | 5.7 | 57 | soft |
| Donostia / San Sebastián | 5.6 | 56 | soft |
| Errenteria | 5.4 | 54 | soft |
| Ormaiztegi | 5.3 | 53 | soft |
| Usurbil | 5 | 50 | soft |
| Astigarraga | 4.9 | 49 | soft |
| Lezo | 4.7 | 47 | soft |
| Hernani | 3.9 | 39 | soft |
| Urnieta | 3.7 | 37 | soft |
| Oiartzun | 1.5 | 15 | soft |
| Berastegi | 1.3 | 13 | soft |