Tap water hardness in 14
We have published hardness data for 19 cities in 14. The median is 75 mg/L; the hardest water is in Carcavelos (90 mg/L), the softest in Vila Franca de Xira (15 mg/L).
0 % 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 14, hardest first
| mg/L | mg/L | ||
|---|---|---|---|
| Carcavelos | 90 | 90 | moderately hard |
| Camarate | 86 | 86 | moderately hard |
| Moscavide e Portela | 86 | 86 | moderately hard |
| Pontinha | 86 | 86 | moderately hard |
| Areeiro | 76 | 76 | moderately hard |
| Parque das Nações | 76 | 76 | moderately hard |
| Sete Rios | 76 | 76 | moderately hard |
| Ramada | 75 | 75 | moderately hard |
| Sacavém | 75 | 75 | moderately hard |
| Santa Iria da Azóia | 75 | 75 | moderately hard |
| São João da Talha | 75 | 75 | moderately hard |
| Lisbon | 63 | 63 | moderately hard |
| Loures | 58 | 58 | soft |
| Odivelas | 58 | 58 | soft |
| Algueirao | 50 | 50 | soft |
| Cacém | 50 | 50 | soft |
| Queluz | 50 | 50 | soft |
| Rio de Mouro | 50 | 50 | soft |
| Vila Franca de Xira | 15 | 15 | soft |