Water hardness in Sedriano
23.7 °fH very hard
Tap water in Sedriano is very hard: 23.7 °fH (237 mg/L · 13.8 gpg · 13.3 °dH).
Source: Gruppo CAP, analisi acquedotto (open data), 2025 Q3–2026 Q2 (2026-06) · data checked 2026-10-19
Range across supply zones: 210–296 mg/L.
For Sedriano, Gruppo CAP's open data from 60 network samples between Q3 2025 and Q2 2026 give a median of 236.6 mg/L CaCO₃. Readings range from 209.6 to 295.6 mg/L, so some addresses are noticeably harder than others. Hardness is calculated from calcium and magnesium and counts as very hard. We have not checked the wells that serve the town, and kettles and water heaters will scale.
Italian utilities report °f (French degrees); D.Lgs. 31/2001 recommends 15–50 °f.
Water data
| Total hardness | 23.7 °fH |
|---|
How Sedriano compares
- Tap water in Sedriano is 11 % harder than the median of the 629 cities we track in Italy (21.2 °fH).
- By hardness it ranks 262 of 629 in Italy (1 = hardest); 58 % of these cities have softer water.
- In Lombardia it is number 80 of 142 cities; the regional median is 24.9 °fH.
- Nearest city with clearly softer water: Pregnana Milanese, 4 km away (15.2 °fH).
- Nearest city with clearly harder water: Arluno, 3 km away (30.7 °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 Sedriano
| Brand | Setting for this water |
|---|---|
| Bosch | H04 |
| Miele | 13 °dH |
| AEG / Electrolux | 3 |
| Beko | 4th |
| 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 Sedriano water hard or soft?
It is very hard: 237 mg/L as CaCO₃ (13.8 gpg, 13.3 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Sedriano 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 Sedriano water?
13.8 gpg, equal to 13.3 °dH, 23.7 °fH or 237 mg/L calcium carbonate.
What dishwasher salt setting should I use in Sedriano?
For 237 mg/L (13.3 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Sedriano?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Gruppo CAP, analisi acquedotto (open data), 2025 Q3–2026 Q2 (2026-06). Method: computed from supplier's calcium and magnesium. Gruppo CAP, analisi acquedotto (open data), 2025 Q3–2026 Q2 · Outdated figure? Tell us