Water hardness in Fiano Romano
62 °fH very hard
Tap water in Fiano Romano is very hard: 62 °fH (620 mg/L · 36.2 gpg · 34.7 °dH).
Source: Acea Ato 2, qualità dell'acqua per zona (valori mediani) (2026-07) · data checked 2026-10-22
Range across supply zones: 473–635 mg/L.
Acea Ato 2 publishes three zone sheets for Fiano Romano (Gramiccia, Capodimonte and Sassete), dated July 2026. Hardness calculated from their calcium and magnesium values has a median of 619.9 mg/L CaCO₃, ranging from 472.9 to 635.3 mg/L. That is far above the Italian norm and counts as very hard water. We could not reopen the zone PDFs and rely on a cross-check against printed hardness. Scale will form fast, so a softener is a practical option.
Italian utilities report °f (French degrees); D.Lgs. 31/2001 recommends 15–50 °f.
Water data
| Total hardness | 62 °fH |
|---|
How Fiano Romano compares
- Tap water in Fiano Romano is 192 % harder than the median of the 629 cities we track in Italy (21.2 °fH).
- By hardness it ranks 2 of 629 in Italy (1 = hardest); 100 % of these cities have softer water.
- In Lazio it is number 1 of 54 cities; the regional median is 27.2 °fH.
- Nearest city with clearly softer water: Monterotondo, 12 km away (26 °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 Fiano Romano
| Brand | Setting for this water |
|---|---|
| Bosch | H07 |
| Miele | 35 °dH |
| AEG / Electrolux | 7 |
| Beko | 6th |
| Hoover | S5 |
| LG | H4 |
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 Fiano Romano water hard or soft?
It is very hard: 620 mg/L as CaCO₃ (36.2 gpg, 34.7 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Fiano Romano 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 Fiano Romano water?
36.2 gpg, equal to 34.7 °dH, 62 °fH or 620 mg/L calcium carbonate.
What dishwasher salt setting should I use in Fiano Romano?
For 620 mg/L (34.7 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Fiano Romano?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Acea Ato 2, qualità dell'acqua per zona (valori mediani) (2026-07). Method: computed from supplier's calcium and magnesium. Acea Ato 2, qualità dell'acqua per zona (valori mediani) · Outdated figure? Tell us