Water hardness in Trofarello
22.4 °fH very hard
Tap water in Trofarello is very hard: 22.4 °fH (224 mg/L · 13.1 gpg · 12.6 °dH).
Source: SMAT Torino, monitoraggio acque (valori medi), 2026 H1 (2026-06) · data checked 2026-10-19
SMAT, the utility for the Turin area, gives a half-year mean of 224.1 mg/L CaCO₃ for Trofarello for the first half of 2026, calculated from calcium and magnesium. That counts as very hard water, and it is noticeably harder than some other towns on the SMAT network. We have not checked which sources feed the town. Scale is likely on kettles and in dishwashers.
Italian utilities report °f (French degrees); D.Lgs. 31/2001 recommends 15–50 °f.
Water data
| Total hardness | 22.4 °fH |
|---|
How Trofarello compares
- Tap water in Trofarello is 6 % harder than the median of the 629 cities we track in Italy (21.2 °fH).
- By hardness it ranks 289 of 629 in Italy (1 = hardest); 54 % of these cities have softer water.
- In Piemonte it is number 44 of 242 cities; the regional median is 12.3 °fH.
- Nearest city with clearly softer water: Vinovo, 10 km away (16.6 °fH).
- Nearest city with clearly harder water: Cambiano, 3 km away (34.6 °fH).
Ranking of the hardest and softest water in Italy →
What it means at home
- Severe scale: heater elements and washing-machine heaters fail early.
- Detergent use is very high; taps and screens coat within days.
- Dishwasher at maximum salt setting.
- An ion-exchange softener is practically essential; RO for drinking water.
How much salt will you use for softening?
Yes. At this hardness a softener pays for itself through appliance life and detergent.
Descale a coffee machine or kettle about every 1 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Trofarello
| Brand | Setting for this water |
|---|---|
| Bosch | H04 |
| Miele | 13 °dH |
| AEG / Electrolux | 3 |
| Beko | 3rd |
| Hoover | S2 |
| LG | H2 |
From each brand's manual for the model family named in the source; your model may differ, so check its manual. All brands and how to change the setting →
FAQ
Is Trofarello water hard or soft?
It is very hard: 224 mg/L as CaCO₃ (13.1 gpg, 12.6 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Trofarello safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Italian utilities report °f (French degrees); D.Lgs. 31/2001 recommends 15–50 °f.
How many grains per gallon is Trofarello water?
13.1 gpg, equal to 12.6 °dH, 22.4 °fH or 224 mg/L calcium carbonate.
What dishwasher salt setting should I use in Trofarello?
For 224 mg/L (12.6 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Trofarello?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: SMAT Torino, monitoraggio acque (valori medi), 2026 H1 (2026-06). Method: computed from supplier's calcium and magnesium. SMAT Torino, monitoraggio acque (valori medi), 2026 H1 · Outdated figure? Tell us