Water hardness in Nagyzomlin
10.6 °dH very hard
Tap water in Nagyzomlin is very hard: 10.6 °dH (190 mg/L · 11.1 gpg · 19 °fH).
Source: NNGYK — Magyarországi települések ivóvízminősége (HUMVI 2024) (2024) · data checked 2026-10-21
Nagyzomlin, in Hajdú-Bihar, is reported at 190.1 mg/L CaCO₃ in the 2024 NNGYK data, which the site classes as very hard. The supply source is not given in the record. This sits near the boundary with the hard range, so scale is noticeable but less severe than at the top of the scale.
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 | 10.6 °dH |
|---|
How Nagyzomlin compares
- Tap water in Nagyzomlin is 34 % softer than the median of the 3053 cities we track in Hungary (16.1 °dH).
- By hardness it ranks 2420 of 3053 in Hungary (1 = hardest); 21 % of these cities have softer water.
- In Hajdú-Bihar it is number 32 of 100 cities; the regional median is 7.8 °dH.
- Nearest city with clearly softer water: Ártánd, 4 km away (4.8 °dH).
- Nearest city with clearly harder water: Bedő, 4 km away (16.3 °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 Nagyzomlin
| Brand | Setting for this water |
|---|---|
| Bosch | H03 |
| Miele | 11 °dH |
| AEG / Electrolux | 2 |
| 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 Nagyzomlin water hard or soft?
It is very hard: 190 mg/L as CaCO₃ (11.1 gpg, 10.6 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Nagyzomlin 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 Nagyzomlin water?
11.1 gpg, equal to 10.6 °dH, 19 °fH or 190 mg/L calcium carbonate.
What dishwasher salt setting should I use in Nagyzomlin?
For 190 mg/L (10.6 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Nagyzomlin?
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