Water hardness in Capoterra
10.5 °fH moderately hard
Tap water in Capoterra is moderately hard: 10.5 °fH (105 mg/L · 6.1 gpg · 5.9 °dH).
Source: Abbanoa, qualità dell'acqua, semestri 2-2025…1-2026 (2026-06) · data checked 2026-10-20
Range across supply zones: 87–116 mg/L.
Abbanoa's semester tables for Capoterra give a median of 105.2 mg/L CaCO₃ across 10 network samples taken between late 2025 and mid-2026. Readings run from 87.3 to 116.0 mg/L (p10 to p90), so the spread is narrow. The water counts as moderately hard. We have not confirmed which sources supply the town, and descaling the kettle now and then is usually enough at this level.
Italian utilities report °f (French degrees); D.Lgs. 31/2001 recommends 15–50 °f.
Water data
| Total hardness | 10.5 °fH |
|---|
How Capoterra compares
- Tap water in Capoterra is 50 % softer than the median of the 629 cities we track in Italy (21.2 °fH).
- By hardness it ranks 518 of 629 in Italy (1 = hardest); 18 % of these cities have softer water.
- In Sardegna it is number 8 of 17 cities; the regional median is 9.9 °fH.
- Nearest city with clearly softer water: Nuoro, 131 km away (3.2 °fH).
- Nearest city with clearly harder water: Carbonia, 39 km away (19.8 °fH).
Ranking of the hardest and softest water in Italy →
What it means at home
- Visible kettle scale every few weeks; vinegar or citric acid is enough.
- Water heater and washing machine: some long-term scale; a scale inhibitor slows it.
- Dishwasher: medium salt setting.
- Softener optional; pays off mainly with a gas boiler or tankless heater.
How much salt will you use for softening?
Optional. A scale inhibitor or a small softener protects the heater; soap savings are modest.
Descale a coffee machine or kettle about every 3 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Capoterra
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 6 °dH |
| AEG / Electrolux | 2 |
| Beko | 2nd |
| Hoover | S1 |
| LG | H1 |
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 Capoterra water hard or soft?
It is moderately hard: 105 mg/L as CaCO₃ (6.1 gpg, 5.9 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Capoterra 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 Capoterra water?
6.1 gpg, equal to 5.9 °dH, 10.5 °fH or 105 mg/L calcium carbonate.
What dishwasher salt setting should I use in Capoterra?
For 105 mg/L (5.9 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Capoterra?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: Abbanoa, qualità dell'acqua, semestri 2-2025…1-2026 (2026-06). Method: computed from supplier's calcium and magnesium. Abbanoa, qualità dell'acqua, semestri 2-2025…1-2026 · Outdated figure? Tell us