Water hardness in Harc
15.5 °dH very hard
Tap water in Harc is very hard: 15.5 °dH (277 mg/L · 16.2 gpg · 27.7 °fH).
Source: NNGYK — Magyarországi települések ivóvízminősége (HUMVI 2024) (2024) · data checked 2026-10-21
Harc in Tolna county is reported at 276.6 mg/L hardness as CaCO3 (NNGYK, 2024), still within the very hard category but lower than nearby Tolna town. The dataset does not name the supply source, so we describe only the regional picture: groundwater-based supply is common in Hungary. Scale is likely on kettles and in water heaters.
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 | 15.5 °dH |
|---|
How Harc compares
- Tap water in Harc is close to the median of the 3053 cities we track in Hungary (16.1 °dH).
- By hardness it ranks 1608 of 3053 in Hungary (1 = hardest); 47 % of these cities have softer water.
- In Tolna it is number 72 of 110 cities; the regional median is 17 °dH.
- Nearest city with clearly softer water: Sióagárd, 3 km away (10.6 °dH).
- Nearest city with clearly harder water: Zomba, 4 km away (20.4 °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 Harc
| 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 Harc water hard or soft?
It is very hard: 277 mg/L as CaCO₃ (16.2 gpg, 15.5 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Harc 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 Harc water?
16.2 gpg, equal to 15.5 °dH, 27.7 °fH or 277 mg/L calcium carbonate.
What dishwasher salt setting should I use in Harc?
For 277 mg/L (15.5 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Harc?
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