Water hardness in Hét
15.2 °dH very hard
Tap water in Hét is very hard: 15.2 °dH (271 mg/L · 15.8 gpg · 27.1 °fH).
Source: NNGYK — Magyarországi települések ivóvízminősége (HUMVI 2024) (2024) · data checked 2026-10-21
In the northern hills, supply is drawn from karst springs and wells in limestone and volcanic rock; the exact source for Hét is not confirmed here. Limestone-fed karst water is the hardest in the area, while water from volcanic rock is softer; the 2024 national report puts Hét at 271.3 mg/L CaCO₃, a very hard reading. Appliances that heat water will collect scale, so periodic descaling pays off.
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 | 15.2 °dH |
|---|
How Hét compares
- Tap water in Hét is 6 % softer than the median of the 3053 cities we track in Hungary (16.1 °dH).
- By hardness it ranks 1654 of 3053 in Hungary (1 = hardest); 45 % of these cities have softer water.
- In Borsod-Abaúj-Zemplén it is number 204 of 365 cities; the regional median is 16.4 °dH.
- Nearest city with clearly softer water: Imola, 20 km away (11.8 °dH).
- Nearest city with clearly harder water: Kelemér, 8 km away (28.4 °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 Hét
| Brand | Setting for this water |
|---|---|
| Bosch | H04 |
| Miele | 15 °dH |
| AEG / Electrolux | 4 |
| Beko | 4th |
| 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 Hét water hard or soft?
It is very hard: 271 mg/L as CaCO₃ (15.8 gpg, 15.2 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Hét 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 Hét water?
15.8 gpg, equal to 15.2 °dH, 27.1 °fH or 271 mg/L calcium carbonate.
What dishwasher salt setting should I use in Hét?
For 271 mg/L (15.2 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Hét?
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