Water hardness in Osli
12.5 °dH very hard
Tap water in Osli is very hard: 12.5 °dH (223 mg/L · 13 gpg · 22.3 °fH).
Source: NNGYK — Magyarországi települések ivóvízminősége (HUMVI 2024) (2024) · data checked 2026-10-21
Osli, in Győr-Moson-Sopron county, is listed at 223.1 mg/L CaCO₃ in the NNGYK 2024 report, in the very hard band. The entry does not name the water source. A scale-protection filter can reduce deposits on heating elements.
Hungarian suppliers report total hardness in German degrees (nk°) or mg/L CaO; the limit is 50–350 mg/L CaO.
Water data
| Total hardness | 12.5 °dH |
|---|
How Osli compares
- Tap water in Osli is 22 % softer than the median of the 3053 cities we track in Hungary (16.1 °dH).
- By hardness it ranks 2180 of 3053 in Hungary (1 = hardest); 28 % of these cities have softer water.
- In Győr-Moson-Sopron it is number 129 of 180 cities; the regional median is 15.3 °dH.
- Nearest city with clearly softer water: Acsalag, 10 km away (8.2 °dH).
- Nearest city with clearly harder water: Tőzeggyármajor, 10 km away (19.6 °dH).
Ranking of the hardest and softest water in Hungary →
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 Osli
| Brand | Setting for this water |
|---|---|
| Bosch | H04 |
| Miele | 12 °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 Osli water hard or soft?
It is very hard: 223 mg/L as CaCO₃ (13 gpg, 12.5 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Osli safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Hungarian suppliers report total hardness in German degrees (nk°) or mg/L CaO; the limit is 50–350 mg/L CaO.
How many grains per gallon is Osli water?
13 gpg, equal to 12.5 °dH, 22.3 °fH or 223 mg/L calcium carbonate.
What dishwasher salt setting should I use in Osli?
For 223 mg/L (12.5 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Osli?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: NNGYK — Magyarországi települések ivóvízminősége (HUMVI 2024) (2024). Method: figure published by the water supplier. NNGYK — Magyarországi települések ivóvízminősége (HUMVI 2024) · Outdated figure? Tell us