Water hardness in Roveň
2.48 mmol/L very hard
Tap water in Roveň is very hard: 2.48 mmol/L (248 mg/L · 14.5 gpg · 13.9 °dH).
Source: SčVK, Moje obec – kvalita vody (aktuální hodnoty) (2026) · data checked 2026-10-21
Severočeské vodovody a kanalizace (SčVK) publishes 248.2 mg/L CaCO₃ for Roveň in the Liberecký kraj, which is very hard. The utility does not state the source for this village on its lookup page, so the cause of the high figure is not confirmed here. Expect visible scale on kettles, taps and heating elements, and consider a scale-reduction filter or softener.
Czech suppliers report "Vápník a hořčík" in mmol/L; the recommended range is 2–3.5 mmol/L.
Water data
| Total hardness | 2.48 mmol/L |
|---|---|
| Calcium (mg/L) | 96 |
| Magnesium (mg/L) | 2 |
| Utility | Severočeské vodovody a kanalizace, a.s. (SčVK) |
How Roveň compares
- Tap water in Roveň is 107 % harder than the median of the 1516 cities we track in Czechia (1.2 mmol/L).
- By hardness it ranks 286 of 1516 in Czechia (1 = hardest); 81 % of these cities have softer water.
- In Liberecký kraj it is number 52 of 273 cities; the regional median is 1.26 mmol/L.
- Nearest city with clearly softer water: Budíkov, 1 km away (1.77 mmol/L).
- Nearest city with clearly harder water: Hradčany, 4 km away (3.15 mmol/L).
Ranking of the hardest and softest water in Czechia →
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 Roveň
| Brand | Setting for this water |
|---|---|
| Bosch | H04 |
| Miele | 14 °dH |
| AEG / Electrolux | 3 |
| 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 Roveň water hard or soft?
It is very hard: 248 mg/L as CaCO₃ (14.5 gpg, 13.9 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Roveň 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 Roveň water?
14.5 gpg, equal to 13.9 °dH, 24.8 °fH or 248 mg/L calcium carbonate.
What dishwasher salt setting should I use in Roveň?
For 248 mg/L (13.9 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Roveň?
Yes, unless you are only passing through: scale damages appliances within a few years.
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