Water hardness in Martonyi
22.6 °dH very hard
Tap water in Martonyi is very hard: 22.6 °dH (403 mg/L · 23.6 gpg · 40.3 °fH).
Source: NNGYK — Magyarországi települések ivóvízminősége (HUMVI 2024) (2024) · data checked 2026-10-21
Martonyi in Borsod-Abaúj-Zemplén county is reported at 403.4 mg/L hardness as CaCO3 (NNGYK, 2024), which is very hard. The published figure does not tell us the source, and we have not confirmed it. Heavy limescale on heaters and fittings is likely without treatment.
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 | 22.6 °dH |
|---|
How Martonyi compares
- Tap water in Martonyi is 40 % harder than the median of the 3053 cities we track in Hungary (16.1 °dH).
- By hardness it ranks 450 of 3053 in Hungary (1 = hardest); 85 % of these cities have softer water.
- In Borsod-Abaúj-Zemplén it is number 50 of 365 cities; the regional median is 16.4 °dH.
- Nearest city with clearly softer water: Rakacaszend, 6 km away (9 °dH).
- Nearest city with clearly harder water: Szalonna, 2 km away (30 °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 Martonyi
| Brand | Setting for this water |
|---|---|
| Bosch | H06 |
| Miele | 23 °dH |
| AEG / Electrolux | 5 |
| Beko | 6th |
| Hoover | S3 |
| LG | H4 |
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 Martonyi water hard or soft?
It is very hard: 403 mg/L as CaCO₃ (23.6 gpg, 22.6 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Martonyi 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 Martonyi water?
23.6 gpg, equal to 22.6 °dH, 40.3 °fH or 403 mg/L calcium carbonate.
What dishwasher salt setting should I use in Martonyi?
For 403 mg/L (22.6 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Martonyi?
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