Tap water hardness in Asturias
We have published hardness data for 49 cities in Asturias. The median is 11.5 °fH; the hardest water is in Gozón (29.8 °fH), the softest in Coaña (0.7 °fH).
43 % of these cities have hard or very hard water (over 120 mg/L).
Cities in Asturias, hardest first
| °fH | mg/L | ||
|---|---|---|---|
| Gozón | 29.8 | 298 | very hard |
| Sariego | 22.6 | 227 | very hard |
| Castrillón | 19.6 | 196 | very hard |
| Regueras, Las | 18.6 | 186 | very hard |
| Grado | 18.3 | 183 | very hard |
| Oviedo | 18.1 | 182 | very hard |
| Caravia | 16.3 | 163 | hard |
| Ribadedeva | 16.3 | 163 | hard |
| Ribadesella | 16.2 | 162 | hard |
| Amieva | 14.8 | 148 | hard |
| Quirós | 14.4 | 144 | hard |
| Piloña | 14.3 | 143 | hard |
| Proaza | 14.2 | 142 | hard |
| Cangas de Onís | 13.8 | 138 | hard |
| Llanera | 13.6 | 136 | hard |
| Carreño | 13.2 | 132 | hard |
| Peñamellera Alta | 12.8 | 128 | hard |
| Lena | 12.6 | 126 | hard |
| Sobrescobio | 12.5 | 125 | hard |
| Colunga | 12.1 | 121 | hard |
| Peñamellera Baja | 12.1 | 121 | hard |
| Somiedo | 11.8 | 118 | moderately hard |
| Aller | 11.7 | 117 | moderately hard |
| Onís | 11.7 | 117 | moderately hard |
| Avilés | 11.5 | 115 | moderately hard |
| Llanes | 11.3 | 113 | moderately hard |
| Cabrales | 11.2 | 112 | moderately hard |
| Gijón/Xixón | 11.1 | 111 | moderately hard |
| Villaviciosa | 10.5 | 105 | moderately hard |
| Siero | 10.1 | 101 | moderately hard |
| Mieres | 10.1 | 101 | moderately hard |
| Villayón | 10 | 100 | moderately hard |
| Cabranes | 9.6 | 96 | moderately hard |
| Pravia | 9.3 | 94 | moderately hard |
| Langreo | 9.3 | 93 | moderately hard |
| Salas | 8.8 | 88 | moderately hard |
| Corvera de Asturias | 8.7 | 87 | moderately hard |
| Cangas del Narcea | 4.1 | 41 | soft |
| Muros de Nalón | 4 | 40 | soft |
| Tineo | 3.8 | 38 | soft |
| Navia | 3.3 | 33 | soft |
| San Tirso de Abres | 2.8 | 28 | soft |
| Tapia de Casariego | 2.2 | 22 | soft |
| Franco, El | 2 | 20 | soft |
| Castropol | 1.9 | 19 | soft |
| Cudillero | 1.7 | 17 | soft |
| Taramundi | 1.5 | 15 | soft |
| Valdés | 1.1 | 11 | soft |
| Coaña | 0.7 | 7 | soft |