Water hardness in Darvas
8.2 °dH hard
Tap water in Darvas is hard: 8.2 °dH (146 mg/L · 8.5 gpg · 14.6 °fH).
Source: NNGYK — Magyarországi települések ivóvízminősége (HUMVI 2024) (2024) · data checked 2026-10-21
NNGYK's 2024 drinking-water report lists Darvas, in Hajdú-Bihar county, at 145.5 mg/L as CaCO3, which falls in our hard band. The file does not name the town's water source, so treat this as the reported figure for the settlement, not a statement about the wider county. Scale on kettles and heating elements is a realistic expectation at this level.
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 | 8.2 °dH |
|---|
How Darvas compares
- Tap water in Darvas is 49 % softer than the median of the 3053 cities we track in Hungary (16.1 °dH).
- By hardness it ranks 2635 of 3053 in Hungary (1 = hardest); 14 % of these cities have softer water.
- In Hajdú-Bihar it is number 47 of 100 cities; the regional median is 7.8 °dH.
- Nearest city with clearly softer water: Zsáka, 7 km away (4.3 °dH).
- Nearest city with clearly harder water: Vekerd, 4 km away (14.4 °dH).
Ranking of the hardest and softest water in Hungary →
What it means at home
- Fast scale on taps, shower screens and kettle; white spots on glassware.
- Water heater: efficiency loss and element failures within years if unprotected.
- Dry skin and dull hair after showering are common.
- Softener recommended; jug or reverse osmosis for drinking.
How much salt will you use for softening?
Recommended, especially with a heater or boiler: scale cuts efficiency and shortens its life.
Descale a coffee machine or kettle about every 2 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Darvas
| Brand | Setting for this water |
|---|---|
| Bosch | H02 |
| Miele | 8 °dH |
| AEG / Electrolux | 2 |
| Beko | 3rd |
| Hoover | S1 |
| 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 Darvas water hard or soft?
It is hard: 146 mg/L as CaCO₃ (8.5 gpg, 8.2 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Darvas 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 Darvas water?
8.5 gpg, equal to 8.2 °dH, 14.6 °fH or 146 mg/L calcium carbonate.
What dishwasher salt setting should I use in Darvas?
For 146 mg/L (8.2 °dH) check your manufacturer's table: level 4–5.
Do I need a water softener in Darvas?
Recommended if you have a water heater, boiler or tankless unit: it saves repairs and detergent.
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