Water hardness in Melegnano
13.2 °fH hard
Tap water in Melegnano is hard: 13.2 °fH (132 mg/L · 7.7 gpg · 7.4 °dH).
Source: Gruppo CAP, analisi acquedotto (open data), 2025 Q3–2026 Q2 (2026-06) · data checked 2026-10-19
Range across supply zones: 125–154 mg/L.
Melegnano gets its water from the Gruppo CAP network, which draws on wells tapping the aquifer of the Milan plain. Calculated from the utility's readings, hardness is 132.3 mg/L CaCO₃, with readings from 124.5 to 153.9 mg/L, which counts as hard water. Visible white deposits on taps and shower glass are normal here.
Italian utilities report °f (French degrees); D.Lgs. 31/2001 recommends 15–50 °f.
Water data
| Total hardness | 13.2 °fH |
|---|
How Melegnano compares
- Tap water in Melegnano is 38 % softer than the median of the 629 cities we track in Italy (21.2 °fH).
- By hardness it ranks 472 of 629 in Italy (1 = hardest); 25 % of these cities have softer water.
- In Lombardia it is number 140 of 142 cities; the regional median is 24.9 °fH.
- Nearest city with clearly softer water: Pomaretto, 103 km away (7.5 °fH).
- Nearest city with clearly harder water: Vizzolo Predabissi, 2 km away (29.1 °fH).
Ranking of the hardest and softest water in Italy →
What it means at home
- Fast scale on taps, shower screens and kettle; white spots on glassware.
- Water heater: efficiency loss and element failures within years if unprotected.
- Dry skin and dull hair after showering are common.
- Softener recommended; jug or reverse osmosis for drinking.
How much salt will you use for softening?
Recommended, especially with a heater or boiler: scale cuts efficiency and shortens its life.
Descale a coffee machine or kettle about every 2 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Melegnano
| Brand | Setting for this water |
|---|---|
| Bosch | H01 |
| Miele | 7 °dH |
| AEG / Electrolux | 2 |
| Beko | 2nd |
| Hoover | S1 |
| 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 Melegnano water hard or soft?
It is hard: 132 mg/L as CaCO₃ (7.7 gpg, 7.4 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Melegnano 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 Melegnano water?
7.7 gpg, equal to 7.4 °dH, 13.2 °fH or 132 mg/L calcium carbonate.
What dishwasher salt setting should I use in Melegnano?
For 132 mg/L (7.4 °dH) check your manufacturer's table: level 4–5.
Do I need a water softener in Melegnano?
Recommended if you have a water heater, boiler or tankless unit: it saves repairs and detergent.
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