Water hardness in Háromfa
17.6 °dH very hard
Tap water in Háromfa is very hard: 17.6 °dH (314 mg/L · 18.3 gpg · 31.4 °fH).
Source: NNGYK — Magyarországi települések ivóvízminősége (HUMVI 2024) (2024) · data checked 2026-10-21
Háromfa in Somogy county is reported at 314.1 mg/L CaCO₃ in NNGYK's 2024 dataset (HUMVI), in the very hard range. The dataset gives no detail on the supply, so we do not guess at the geology. Washing machines and kettles will scale up faster than in soft-water areas.
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 | 17.6 °dH |
|---|
How Háromfa compares
- Tap water in Háromfa is 9 % harder than the median of the 3053 cities we track in Hungary (16.1 °dH).
- By hardness it ranks 1242 of 3053 in Hungary (1 = hardest); 58 % of these cities have softer water.
- In Somogy it is number 144 of 240 cities; the regional median is 19.1 °dH.
- Nearest city with clearly softer water: Rinyabesenyő, 16 km away (13 °dH).
- Nearest city with clearly harder water: Szenta, 20 km away (23.2 °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 Háromfa
| Brand | Setting for this water |
|---|---|
| Bosch | H05 |
| Miele | 18 °dH |
| AEG / Electrolux | 4 |
| Beko | 5th |
| Hoover | S3 |
| 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 Háromfa water hard or soft?
It is very hard: 314 mg/L as CaCO₃ (18.3 gpg, 17.6 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Háromfa 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 Háromfa water?
18.3 gpg, equal to 17.6 °dH, 31.4 °fH or 314 mg/L calcium carbonate.
What dishwasher salt setting should I use in Háromfa?
For 314 mg/L (17.6 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Háromfa?
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