Water hardness in Italy
629 cities with published hardness data, sorted by population. Median: 21.2 °fH.
Median
21.2 °fH
212 mg/L CaCO₃ · very hard
- 42 soft
- 94 moderately hard
- 99 hard
- 394 very hard
Italian utilities report °f (French degrees); D.Lgs. 31/2001 recommends 15–50 °f.
Water hardness by postcode in Italy
Ranking of the hardest and softest water in Italy →
Regions
- Abruzzo7 · 23 °fH
- Basilicata7 · 18.2 °fH
- Campania33 · 40 °fH
- Friuli-Venezia Giulia7 · 19.8 °fH
- Lazio54 · 27.2 °fH
- Liguria7 · 22 °fH
- Lombardia142 · 24.9 °fH
- Marche50 · 27 °fH
- Piemonte242 · 12.3 °fH
- Sardegna17 · 9.9 °fH
- Sicilia10 · 20.5 °fH
- Toscana9 · 23 °fH
- Trentino-Alto Adige5 · 16.4 °fH
- Veneto37 · 26.9 °fH
Largest places, hardest first
Every place is listed on its region page.
| °fH | mg/L | ||
|---|---|---|---|
| Angri · Campania | 63 | 630 | very hard |
| Marigliano · Campania | 50 | 500 | very hard |
| Scafati · Campania | 44 | 440 | very hard |
| Castellammare di Stabia · Campania | 43 | 430 | very hard |
| Torre Annunziata · Campania | 43 | 430 | very hard |
| Torre del Greco · Campania | 42 | 420 | very hard |
| Nocera Inferiore · Campania | 42 | 420 | very hard |
| Ercolano · Campania | 41 | 410 | very hard |
| Portici · Campania | 40 | 400 | very hard |
| Casalnuovo di Napoli · Campania | 40 | 400 | very hard |
| San Giorgio a Cremano · Campania | 40 | 400 | very hard |
| Sesto Fiorentino · Toscana | 38 | 380 | very hard |
| Terracina · Lazio | 37.8 | 378 | very hard |
| Gela · Sicilia | 37 | 370 | very hard |
| Pagani · Campania | 37 | 370 | very hard |
| Latina · Lazio | 36.7 | 367 | very hard |
| Pomigliano d'Arco · Campania | 36 | 360 | very hard |
| Desio · Lombardia | 35.4 | 354 | very hard |
| Fondi · Lazio | 35.3 | 353 | very hard |
| Marino · Lazio | 35 | 350 | very hard |
| Rome · Lazio | 34.2 | 342 | very hard |
| Guidonia Montecelio · Lazio | 33.3 | 333 | very hard |
| Acilia-Castel Fusano-Ostia Antica · Lazio | 33 | 330 | very hard |
| Lido di Ostia · Lazio | 33 | 330 | very hard |
| Fiumicino · Lazio | 33 | 330 | very hard |
| Scandicci · Toscana | 33 | 330 | very hard |
| Rivoli · Piemonte | 32.8 | 328 | very hard |
| Civitanova Marche · Marche | 32 | 320 | very hard |
| Cantù · Lombardia | 32 | 320 | very hard |
| Sesto San Giovanni · Lombardia | 31.5 | 315 | very hard |
| Ciampino · Lazio | 30.8 | 308 | very hard |
| Fano · Marche | 30 | 300 | very hard |
| Cologno Monzese · Lombardia | 30 | 300 | very hard |
| Cinisello Balsamo · Lombardia | 29.5 | 295 | very hard |
| Paderno Dugnano · Lombardia | 28.8 | 288 | very hard |
| Venezia · Veneto | 28.6 | 286 | very hard |
| Mira · Veneto | 28.2 | 282 | very hard |
| Milan · Lombardia | 28 | 280 | very hard |
| Macerata · Marche | 28 | 280 | very hard |
| Ladispoli · Lazio | 28 | 280 | very hard |
| Grugliasco · Piemonte | 27.9 | 279 | very hard |
| Senigallia · Marche | 27.8 | 278 | very hard |
| Palermo · Sicilia | 27.8 | 278 | very hard |
| Jesi · Marche | 27.5 | 275 | very hard |
| Pioltello · Lombardia | 27.4 | 274 | very hard |
| Campi Bisenzio · Toscana | 27 | 270 | very hard |
| Monterotondo · Lazio | 26 | 260 | very hard |
| Legnano · Lombardia | 26 | 260 | very hard |
| Corsico · Lombardia | 25.8 | 258 | very hard |
| Imperia · Liguria | 25 | 250 | very hard |
| Mestre · Veneto | 24.6 | 246 | very hard |
| Foligno · Umbria | 24.4 | 244 | very hard |
| Nichelino · Piemonte | 24.3 | 243 | very hard |
| Collegno · Piemonte | 23.3 | 233 | very hard |
| Benevento · Campania | 23 | 230 | very hard |
| Siena · Toscana | 23 | 230 | very hard |
| Sciacca · Sicilia | 23 | 230 | very hard |
| Gorizia · Friuli-Venezia Giulia | 22.1 | 221 | very hard |
| Chioggia · Veneto | 21.7 | 217 | very hard |
| Abbiategrasso · Lombardia | 21.7 | 217 | very hard |
| Civitavecchia · Lazio | 21.6 | 216 | very hard |
| Rho · Lombardia | 21.3 | 213 | very hard |
| Aosta · Valle d'Aosta | 21.2 | 212 | very hard |
| Agrigento · Sicilia | 21 | 210 | very hard |
| Somma Vesuviana · Campania | 21 | 210 | very hard |
| San Donà di Piave · Veneto | 20.7 | 207 | very hard |
| Turin · Piemonte | 20.1 | 201 | very hard |
| Favara · Sicilia | 20 | 200 | very hard |
| Bollate · Lombardia | 19.7 | 197 | very hard |
| Sanremo · Liguria | 19.5 | 195 | very hard |
| Rozzano · Lombardia | 19.3 | 193 | very hard |
| Moncalieri · Piemonte | 19.2 | 192 | very hard |
| Potenza · Basilicata | 19 | 190 | very hard |
| Chieri · Piemonte | 18.6 | 186 | very hard |
| Avellino · Campania | 18.3 | 183 | very hard |
| Matera · Basilicata | 18.2 | 182 | very hard |
| Canicattì · Sicilia | 18 | 180 | very hard |
| Caltanissetta · Sicilia | 17 | 170 | hard |
| Anzio · Lazio | 16 | 160 | hard |
| Licata · Sicilia | 16 | 160 | hard |
| Oristano · Sardegna | 15.4 | 154 | hard |
| Genoa · Liguria | 15 | 150 | hard |
| Ascoli Piceno · Marche | 15 | 150 | hard |
| San Giuliano Milanese · Lombardia | 14.3 | 143 | hard |
| Rovereto · Trentino-Alto Adige | 13.6 | 136 | hard |
| San Benedetto del Tronto · Marche | 13.5 | 135 | hard |
| Teramo · Abruzzo | 12 | 120 | hard |
| Pinerolo · Piemonte | 11.3 | 113 | moderately hard |
| Quartu Sant'Elena · Sardegna | 11 | 110 | moderately hard |
| Settimo Torinese · Piemonte | 10.8 | 108 | moderately hard |
| Cagliari · Sardegna | 10.8 | 108 | moderately hard |
| Sassari · Sardegna | 10.8 | 108 | moderately hard |
| Venaria Reale · Piemonte | 9.6 | 96 | moderately hard |
| Alghero · Sardegna | 9.5 | 95 | moderately hard |
| Grosseto · Toscana | 9 | 90 | moderately hard |
| Nettuno · Lazio | 9 | 90 | moderately hard |
| Velletri · Lazio | 8.8 | 88 | moderately hard |
| Aprilia · Lazio | 8.5 | 85 | moderately hard |
| Olbia · Sardegna | 6.4 | 64 | moderately hard |
| Nuoro · Sardegna | 3.2 | 32 | soft |