Water hardness in Krčava
1.18 mmol/L moderately hard
Tap water in Krčava is moderately hard: 1.18 mmol/L (119 mg/L · 6.9 gpg · 6.6 °dH).
Source: Východoslovenská vodárenská spoločnosť (VVS) (2025) · data checked 2026-10-20
Range across supply zones: 117–120 mg/L.
Slovak suppliers report "Vápnik a horčík" in mmol/L; the recommended range is 1.1–5 mmol/L.
Water data
| Total hardness | 1.18 mmol/L |
|---|---|
| Utility | Východoslovenská vodárenská spoločnosť (VVS) |
How Krčava compares
- Tap water in Krčava is 38 % softer than the median of the 1113 cities we track in Slovakia (1.9 mmol/L).
- By hardness it ranks 787 of 1113 in Slovakia (1 = hardest); 29 % of these cities have softer water.
- In Košice Region it is number 216 of 300 cities; the regional median is 1.28 mmol/L.
- Nearest city with clearly softer water: Orechová, 3 km away (0.71 mmol/L).
- Nearest city with clearly harder water: Tibava, 7 km away (3.3 mmol/L).
Ranking of the hardest and softest water in Slovakia →
What it means at home
- Visible kettle scale every few weeks; vinegar or citric acid is enough.
- Water heater and washing machine: some long-term scale; a scale inhibitor slows it.
- Dishwasher: medium salt setting.
- Softener optional; pays off mainly with a gas boiler or tankless heater.
How much salt will you use for softening?
Optional. A scale inhibitor or a small softener protects the heater; soap savings are modest.
Descale a coffee machine or kettle about every 3 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Krčava
| Brand | Setting for this water |
|---|---|
| Bosch | H01 |
| Miele | 7 °dH |
| AEG / Electrolux | 2 |
| Beko | 2nd |
| Hoover | S1 |
| LG | H1 |
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 Krčava water hard or soft?
It is moderately hard: 119 mg/L as CaCO₃ (6.9 gpg, 6.6 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Krčava safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Slovak suppliers report "Vápnik a horčík" in mmol/L; the recommended range is 1.1–5 mmol/L.
How many grains per gallon is Krčava water?
6.9 gpg, equal to 6.6 °dH, 11.9 °fH or 119 mg/L calcium carbonate.
What dishwasher salt setting should I use in Krčava?
For 119 mg/L (6.6 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Krčava?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: Východoslovenská vodárenská spoločnosť (VVS) (2025). Method: figure published by the water supplier. Východoslovenská vodárenská spoločnosť (VVS) · Outdated figure? Tell us