Tap water hardness in Aveiro
We have published hardness data for 6 cities in Aveiro. The median is 97 mg/L; the hardest water is in Espinho (122 mg/L), the softest in Ovar (20 mg/L).
17 % of these cities have hard or very hard water (over 120 mg/L).
Portuguese operators report "dureza total" in mg/L CaCO₃ to ERSAR.
Cities in Aveiro, hardest first
| mg/L | mg/L | ||
|---|---|---|---|
| Espinho | 122 | 122 | hard |
| Santa Maria da Feira | 114 | 114 | moderately hard |
| Oliveira de Azeméis | 98 | 98 | moderately hard |
| Vale de Cambra | 96 | 96 | moderately hard |
| Aveiro | 59 | 59 | soft |
| Ovar | 20 | 20 | soft |