Water hardness in Budapest
13.3 °dH very hard
Tap water in Budapest is very hard: 13.3 °dH (237 mg/L · 13.9 gpg · 23.7 °fH).
Source: Fővárosi Vízművek Zrt., A Fővárosi Vízművek által szolgáltatott ivóvíz minősége 2023 - évi átlagos vízminőségi adatok (2023) · data checked 2026-10-21
Fővárosi Vízművek reports 133 mg/L CaO for Budapest in its 2023 annual water quality report, which we convert to about 237 mg/L CaCO₃. Hungarian rules set an allowed range of 50 to 350 mg/L CaO, so this is well inside the limit but still hard water. The utility also prints a slightly higher figure for its whole service area (139 mg/L CaO); we use the Budapest column.
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 | 13.3 °dH |
|---|---|
| Utility | Fővárosi Vízművek Zrt. |
How Budapest compares
- Tap water in Budapest is 17 % softer than the median of the 3053 cities we track in Hungary (16.1 °dH).
- By hardness it ranks 2012 of 3053 in Hungary (1 = hardest); 34 % of these cities have softer water.
- Nearest city with clearly softer water: Taksony, 19 km away (6 °dH).
- Nearest city with clearly harder water: Remeteszőlős, 11 km away (24.8 °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 Budapest
| 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 Budapest water hard or soft?
It is very hard: 237 mg/L as CaCO₃ (13.9 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 Budapest 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 Budapest water?
13.9 gpg, equal to 13.3 °dH, 23.7 °fH or 237 mg/L calcium carbonate.
What dishwasher salt setting should I use in Budapest?
For 237 mg/L (13.3 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Budapest?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Fővárosi Vízművek Zrt., A Fővárosi Vízművek által szolgáltatott ivóvíz minősége 2023 - évi átlagos vízminőségi adatok (2023). Method: figure published by the water supplier. Fővárosi Vízművek Zrt., A Fővárosi Vízművek által szolgáltatott ivóvíz minősége 2023 - évi átlagos vízminőségi adatok · Outdated figure? Tell us