Water hardness in Valmontone
17.2 °fH hard
Tap water in Valmontone is hard: 17.2 °fH (172 mg/L · 10.1 gpg · 9.7 °dH).
Source: Acea Ato 2, qualità dell'acqua per zona (valori mediani) (2026-07) · data checked 2026-10-20
Range across supply zones: 162–179 mg/L.
Acea Ato 2 serves Valmontone as part of the wider Rome area, whose network is fed mainly by Apennine springs through long aqueducts; which source reaches Valmontone directly is not stated on the page we used. The figure we show, 172.4 mg/L CaCO₃, is calculated from the utility's published analyses, with readings from 161.6 to 179.3 mg/L, which counts as hard water. Appliances with heating elements need descaling now and then, and soap lathers less easily.
Italian utilities report °f (French degrees); D.Lgs. 31/2001 recommends 15–50 °f.
Water data
| Total hardness | 17.2 °fH |
|---|
How Valmontone compares
- Tap water in Valmontone is 19 % softer than the median of the 629 cities we track in Italy (21.2 °fH).
- By hardness it ranks 406 of 629 in Italy (1 = hardest); 36 % of these cities have softer water.
- In Lazio it is number 44 of 54 cities; the regional median is 27.2 °fH.
- Nearest city with clearly softer water: Artena, 4 km away (12.9 °fH).
- Nearest city with clearly harder water: Palestrina, 7 km away (27.3 °fH).
Ranking of the hardest and softest water in Italy →
What it means at home
- Fast scale on taps, shower screens and kettle; white spots on glassware.
- Water heater: efficiency loss and element failures within years if unprotected.
- Dry skin and dull hair after showering are common.
- Softener recommended; jug or reverse osmosis for drinking.
How much salt will you use for softening?
Recommended, especially with a heater or boiler: scale cuts efficiency and shortens its life.
Descale a coffee machine or kettle about every 2 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Valmontone
| Brand | Setting for this water |
|---|---|
| Bosch | H02 |
| Miele | 10 °dH |
| AEG / Electrolux | 2 |
| Beko | 3rd |
| Hoover | S1 |
| 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 Valmontone water hard or soft?
It is hard: 172 mg/L as CaCO₃ (10.1 gpg, 9.7 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Valmontone 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 Valmontone water?
10.1 gpg, equal to 9.7 °dH, 17.2 °fH or 172 mg/L calcium carbonate.
What dishwasher salt setting should I use in Valmontone?
For 172 mg/L (9.7 °dH) check your manufacturer's table: level 4–5.
Do I need a water softener in Valmontone?
Recommended if you have a water heater, boiler or tankless unit: it saves repairs and detergent.
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