Water hardness in Porto San Giorgio
18 °fH very hard
Tap water in Porto San Giorgio is very hard: 18 °fH (180 mg/L · 10.5 gpg · 10.1 °dH).
Source: ARPAM, Libro bianco sulle acque potabili (dati 2001-2002) (2001) · data checked 2026-10-29
Range across supply zones: 130–240 mg/L.
This figure is over 3 years old; hardness may have changed.
The Marche region's drinking water is a mix of Apennine springs and valley groundwater, delivered by the local utilities. We hold a value of 180.0 mg/L CaCO₃, with readings from 130.0 to 240.0 mg/L, which counts as very hard water (a 2001 figure that may have changed since). Values differ across the area, so check your own address before buying a softener; 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 | 18 °fH |
|---|---|
| Utility | ARPAM (libro bianco; gestori CIIP/ATAC/etc.) |
How Porto San Giorgio compares
- Tap water in Porto San Giorgio is 15 % softer than the median of the 629 cities we track in Italy (21.2 °fH).
- By hardness it ranks 393 of 629 in Italy (1 = hardest); 37 % of these cities have softer water.
- In Marche it is number 46 of 50 cities; the regional median is 27 °fH.
- Nearest city with clearly softer water: Fermo, 6 km away (13 °fH).
- Nearest city with clearly harder water: Civitanova Marche, 15 km away (32 °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 Porto San Giorgio
| Brand | Setting for this water |
|---|---|
| Bosch | H02 |
| Miele | 10 °dH |
| AEG / Electrolux | 2 |
| 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 Porto San Giorgio water hard or soft?
It is very hard: 180 mg/L as CaCO₃ (10.5 gpg, 10.1 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Porto San Giorgio 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 Porto San Giorgio water?
10.5 gpg, equal to 10.1 °dH, 18 °fH or 180 mg/L calcium carbonate.
What dishwasher salt setting should I use in Porto San Giorgio?
For 180 mg/L (10.1 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Porto San Giorgio?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: ARPAM, Libro bianco sulle acque potabili (dati 2001-2002) (2001). Method: older figure, source currently unavailable. ARPAM, Libro bianco sulle acque potabili (dati 2001-2002) · Outdated figure? Tell us