Water hardness in Dunaharaszti
15.8 °dH very hard
Tap water in Dunaharaszti is very hard: 15.8 °dH (282 mg/L · 16.5 gpg · 28.2 °fH).
Source: NNGYK — Magyarországi települések ivóvízminősége (HUMVI 2024) (2024) · data checked 2026-10-21
Much of Pest county is supplied from riverbank-filtered Danube wells, though some towns use local wells; the exact source for Dunaharaszti is not confirmed here. Water filtered through the Danube's gravel banks carries calcium and magnesium from limestone and dolomite in the river's catchment, which usually makes it hard; the 2024 national report puts Dunaharaszti at 282.0 mg/L CaCO₃, a very hard reading. Limescale appears on kettles and taps within weeks, and heating appliances need regular 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 | 15.8 °dH |
|---|
How Dunaharaszti compares
- Tap water in Dunaharaszti is close to the median of the 3053 cities we track in Hungary (16.1 °dH).
- By hardness it ranks 1571 of 3053 in Hungary (1 = hardest); 48 % of these cities have softer water.
- In Pest it is number 74 of 193 cities; the regional median is 14.5 °dH.
- Nearest city with clearly softer water: Taksony, 4 km away (6 °dH).
- Nearest city with clearly harder water: Szigetújfalu, 19 km away (33.9 °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 Dunaharaszti
| Brand | Setting for this water |
|---|---|
| Bosch | H04 |
| Miele | 16 °dH |
| AEG / Electrolux | 4 |
| Beko | 5th |
| Hoover | S2 |
| LG | H3 |
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 Dunaharaszti water hard or soft?
It is very hard: 282 mg/L as CaCO₃ (16.5 gpg, 15.8 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Dunaharaszti 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 Dunaharaszti water?
16.5 gpg, equal to 15.8 °dH, 28.2 °fH or 282 mg/L calcium carbonate.
What dishwasher salt setting should I use in Dunaharaszti?
For 282 mg/L (15.8 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Dunaharaszti?
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