Water hardness in Sanremo
19.5 °fH very hard
Tap water in Sanremo is very hard: 19.5 °fH (195 mg/L · 11.4 gpg · 10.9 °dH).
Source: Rivieracqua, la qualità dell'acqua (tabella acquedotto) (2025) · data checked 2026-10-29
Range across supply zones: 120–270 mg/L.
2 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| °fH | mg/L | ||
|---|---|---|---|
| Poggio (fascia alta Sanremo) | 12 | 120 | hard |
| Roja (Centro) | 27 | 270 | very hard |
Sanremo is on the Roja-fed network of Rivieracqua, which brings water from the Roja valley along the Ligurian coast; we have not verified how much local supply is mixed in. Its published hardness for Sanremo is 195.0 mg/L CaCO₃ across 2 supply zones, with readings from 120.0 to 270.0 mg/L, which counts as very hard water. Values differ across the area, so check your own address before buying a softener; limescale builds up quickly on heating elements and taps, so a softener or regular descaling is worth considering.
Italian utilities report °f (French degrees); D.Lgs. 31/2001 recommends 15–50 °f.
Water data
| Total hardness | 19.5 °fH |
|---|---|
| calcio_mg_l | 43 |
| magnesio_mg_l | 2 |
| Utility | Rivieracqua |
How Sanremo compares
- Tap water in Sanremo is 8 % softer than the median of the 629 cities we track in Italy (21.2 °fH).
- By hardness it ranks 364 of 629 in Italy (1 = hardest); 42 % of these cities have softer water.
- In Liguria it is number 5 of 7 cities; the regional median is 22 °fH.
- Nearest city with clearly softer water: Villafranca Piemonte, 110 km away (11 °fH).
- Nearest city with clearly harder water: Ventimiglia, 14 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 Sanremo
| Brand | Setting for this water |
|---|---|
| Bosch | H03 |
| Miele | 11 °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 Sanremo water hard or soft?
It is very hard: 195 mg/L as CaCO₃ (11.4 gpg, 10.9 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Sanremo 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 Sanremo water?
11.4 gpg, equal to 10.9 °dH, 19.5 °fH or 195 mg/L calcium carbonate.
What dishwasher salt setting should I use in Sanremo?
For 195 mg/L (10.9 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Sanremo?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Rivieracqua, la qualità dell'acqua (tabella acquedotto) (2025). Method: figure published by the water supplier. Rivieracqua, la qualità dell'acqua (tabella acquedotto) · Outdated figure? Tell us