Water hardness in Ventimiglia
26 °fH very hard
Tap water in Ventimiglia is very hard: 26 °fH (260 mg/L · 15.2 gpg · 14.6 °dH).
Source: Rivieracqua, la qualità dell'acqua (tabella acquedotto, zona Ponente - Ventimiglia) (2025) · data checked 2026-10-29
Range across supply zones: 260–270 mg/L.
In the Imperia area Rivieracqua supplies most of the water from the Roja system, a pipeline that carries Roja valley water along the coast to Ventimiglia and its neighbours; limestone in the valley's catchment adds hardness. The reported figure is 260.0 mg/L CaCO₃, with readings from 260.0 to 270.0 mg/L, 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 |
|---|---|
| calcio_mg_l | 84 |
| magnesio_mg_l | 12 |
| Utility | Rivieracqua |
How Ventimiglia compares
- Tap water in Ventimiglia is 23 % harder than the median of the 629 cities we track in Italy (21.2 °fH).
- By hardness it ranks 208 of 629 in Italy (1 = hardest); 67 % of these cities have softer water.
- In Liguria it is number 2 of 7 cities; the regional median is 22 °fH.
- Nearest city with clearly softer water: Bordighera, 5 km away (19 °fH).
- Nearest city with clearly harder water: Cambiano, 132 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 Ventimiglia
| 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 Ventimiglia 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 Ventimiglia 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 Ventimiglia 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 Ventimiglia?
For 260 mg/L (14.6 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Ventimiglia?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Rivieracqua, la qualità dell'acqua (tabella acquedotto, zona Ponente - Ventimiglia) (2025). Method: figure published by the water supplier. Rivieracqua, la qualità dell'acqua (tabella acquedotto, zona Ponente - Ventimiglia) · Outdated figure? Tell us