Water hardness in Monterotondo
26 °fH very hard
Tap water in Monterotondo is very hard: 26 °fH (260 mg/L · 15.2 gpg · 14.6 °dH).
Source: Acea Ato 2, qualità dell'acqua per zona (valori mediani) (2026-07) · data checked 2026-10-20
The supply to Monterotondo comes through Acea Ato 2, which relies mainly on spring water from the Apennines plus local sources; we have not matched Monterotondo to a single intake. Calculated from the utility's readings, hardness is 260.3 mg/L CaCO₃, which counts as very hard water. Kettles, steam irons and dishwashers collect scale fast at this level, and a softener is a common answer.
Italian utilities report °f (French degrees); D.Lgs. 31/2001 recommends 15–50 °f.
Water data
| Total hardness | 26 °fH |
|---|
How Monterotondo compares
- Tap water in Monterotondo is 23 % harder than the median of the 629 cities we track in Italy (21.2 °fH).
- By hardness it ranks 207 of 629 in Italy (1 = hardest); 67 % of these cities have softer water.
- In Lazio it is number 29 of 54 cities; the regional median is 27.2 °fH.
- Nearest city with clearly softer water: Ariccia, 37 km away (16.9 °fH).
- Nearest city with clearly harder water: Tor Lupara, 6 km away (34.3 °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 Monterotondo
| Brand | Setting for this water |
|---|---|
| Bosch | H04 |
| Miele | 15 °dH |
| AEG / Electrolux | 3 |
| Beko | 4th |
| Hoover | S2 |
| LG | H3 |
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 Monterotondo water hard or soft?
It is very hard: 260 mg/L as CaCO₃ (15.2 gpg, 14.6 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Monterotondo 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 Monterotondo water?
15.2 gpg, equal to 14.6 °dH, 26 °fH or 260 mg/L calcium carbonate.
What dishwasher salt setting should I use in Monterotondo?
For 260 mg/L (14.6 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Monterotondo?
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