Water hardness in Malta
23 cities with published hardness data, sorted by population. Median: 158 mg/L.
Median
158 mg/L
hard
- 1 soft
- 22 hard
The Water Services Corporation reports total hardness in mg/L CaCO₃; Maltese tap water blends reverse-osmosis and groundwater, and the EU Drinking Water Directive sets no limit for hardness.
Ranking of the hardest and softest water in Malta →
Largest places, hardest first
| mg/L | mg/L | ||
|---|---|---|---|
| San Pawl il-Bahar · Saint Paul’s Bay | 153 | 153 | hard |
| Mosta · Il-Mosta | 139 | 139 | hard |
| Sliema · Tas-Sliema | 162 | 162 | hard |
| Qormi · Qormi | 145 | 145 | hard |
| Zabbar · Ħaż-Żabbar | 160 | 160 | hard |
| Swieqi · Is-Swieqi | 177 | 177 | hard |
| Birzebbuga · Birżebbuġa | 159 | 159 | hard |
| Rabat · Ir-Rabat | 173 | 173 | hard |
| Zejtun · Iż-Żejtun | 156 | 156 | hard |
| Ghadira · Il-Mellieħa | 38 | 38 | soft |
| Xemxija · Saint Paul’s Bay | 128 | 128 | hard |
| Madliena · Is-Swieqi | 170 | 170 | hard |