Water hardness in Kőszeg
9 °dH hard
Tap water in Kőszeg is hard: 9 °dH (161 mg/L · 9.4 gpg · 16.1 °fH).
Source: NNGYK — Magyarországi települések ivóvízminősége (HUMVI 2024) (2024) · data checked 2026-10-21
Kőszeg is in Vas county, where supply comes mostly from groundwater wells; the exact source is not confirmed here. Mineral content comes from the sandy-gravelly Pannonian layers of western Hungary; for Kőszeg the 2024 national report gives 160.6 mg/L CaCO₃ (hard). Limescale is a mild nuisance here; most households manage with occasional descaling.
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 | 9 °dH |
|---|
How Kőszeg compares
- Tap water in Kőszeg is 44 % softer than the median of the 3053 cities we track in Hungary (16.1 °dH).
- By hardness it ranks 2570 of 3053 in Hungary (1 = hardest); 16 % of these cities have softer water.
- In Vas it is number 157 of 208 cities; the regional median is 15.9 °dH.
- Nearest city with clearly softer water: Alsóújlak, 42 km away (6.4 °dH).
- Nearest city with clearly harder water: Cák, 4 km away (18.3 °dH).
Ranking of the hardest and softest water in Hungary →
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 Kőszeg
| Brand | Setting for this water |
|---|---|
| Bosch | H02 |
| Miele | 9 °dH |
| AEG / Electrolux | 2 |
| Beko | 3rd |
| 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 Kőszeg water hard or soft?
It is hard: 161 mg/L as CaCO₃ (9.4 gpg, 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 Kőszeg 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 Kőszeg water?
9.4 gpg, equal to 9 °dH, 16.1 °fH or 161 mg/L calcium carbonate.
What dishwasher salt setting should I use in Kőszeg?
For 161 mg/L (9 °dH) check your manufacturer's table: level 4–5.
Do I need a water softener in Kőszeg?
Recommended if you have a water heater, boiler or tankless unit: it saves repairs and detergent.
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