Water hardness in Ostffyasszonyfa
11.5 °dH very hard
Tap water in Ostffyasszonyfa is very hard: 11.5 °dH (206 mg/L · 12 gpg · 20.6 °fH).
Source: NNGYK — Magyarországi települések ivóvízminősége (HUMVI 2024) (2024) · data checked 2026-10-21
In the NNGYK 2024 drinking-water data, Ostffyasszonyfa in Vas county is listed at 206.1 mg/L as CaCO₃. That is in the very hard category. The source of the supply is not given in the record, so the figure applies to the settlement as published.
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 | 11.5 °dH |
|---|
How Ostffyasszonyfa compares
- Tap water in Ostffyasszonyfa is 28 % softer than the median of the 3053 cities we track in Hungary (16.1 °dH).
- By hardness it ranks 2307 of 3053 in Hungary (1 = hardest); 24 % of these cities have softer water.
- In Vas it is number 125 of 208 cities; the regional median is 15.9 °dH.
- Nearest city with clearly softer water: Mersevát, 13 km away (5.1 °dH).
- Nearest city with clearly harder water: Uraiújfalu, 6 km away (18.2 °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 Ostffyasszonyfa
| Brand | Setting for this water |
|---|---|
| Bosch | H03 |
| 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 Ostffyasszonyfa water hard or soft?
It is very hard: 206 mg/L as CaCO₃ (12 gpg, 11.5 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Ostffyasszonyfa 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 Ostffyasszonyfa water?
12 gpg, equal to 11.5 °dH, 20.6 °fH or 206 mg/L calcium carbonate.
What dishwasher salt setting should I use in Ostffyasszonyfa?
For 206 mg/L (11.5 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Ostffyasszonyfa?
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