Water hardness in Rváčov
1.08 mmol/L moderately hard
Tap water in Rváčov is moderately hard: 1.08 mmol/L (108 mg/L · 6.3 gpg · 6.1 °dH).
Source: SčVK, Moje obec – kvalita vody (aktuální hodnoty) (2026) · data checked 2026-10-21
SčVK reports 108.1 mg/L CaCO₃ for Rváčov in the Liberecký kraj, a moderate value. The published page does not say which source feeds this village, so we describe only the figure. Some limescale will appear on kettles over time, but it is usually manageable with regular descaling.
Czech suppliers report "Vápník a hořčík" in mmol/L; the recommended range is 2–3.5 mmol/L.
Water data
| Total hardness | 1.08 mmol/L |
|---|---|
| Calcium (mg/L) | 36 |
| Magnesium (mg/L) | 4.36 |
| Utility | Severočeské vodovody a kanalizace, a.s. (SčVK) |
How Rváčov compares
- Tap water in Rváčov is 10 % softer than the median of the 1516 cities we track in Czechia (1.2 mmol/L).
- By hardness it ranks 850 of 1516 in Czechia (1 = hardest); 44 % of these cities have softer water.
- In Liberecký kraj it is number 157 of 273 cities; the regional median is 1.26 mmol/L.
- Nearest city with clearly softer water: Horská Kamenice, 12 km away (0.8 mmol/L).
- Nearest city with clearly harder water: Košov, 2 km away (1.89 mmol/L).
Ranking of the hardest and softest water in Czechia →
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 Rváčov
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 6 °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 Rváčov water hard or soft?
It is moderately hard: 108 mg/L as CaCO₃ (6.3 gpg, 6.1 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Rváčov safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Czech suppliers report "Vápník a hořčík" in mmol/L; the recommended range is 2–3.5 mmol/L.
How many grains per gallon is Rváčov water?
6.3 gpg, equal to 6.1 °dH, 10.8 °fH or 108 mg/L calcium carbonate.
What dishwasher salt setting should I use in Rváčov?
For 108 mg/L (6.1 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Rváčov?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: SčVK, Moje obec – kvalita vody (aktuální hodnoty) (2026). Method: figure published by the water supplier. SčVK, Moje obec – kvalita vody (aktuální hodnoty) · Outdated figure? Tell us