Water hardness in Javory
1.63 mmol/L hard
Tap water in Javory is hard: 1.63 mmol/L (163 mg/L · 9.5 gpg · 9.1 °dH).
Source: SčVK, Moje obec – kvalita vody (aktuální hodnoty) (2026) · data checked 2026-10-21
Range across supply zones: 151–175 mg/L.
SčVK reports 163.1 mg/L CaCO₃ for Javory in the Děčín district of the Ústí Region, with a range of 151.1 to 175.2 mg/L. That is hard water. The spread suggests the value shifts over time or between sampling points, and the source is not named by the utility. Limescale on appliances is likely.
Czech suppliers report "Vápník a hořčík" in mmol/L; the recommended range is 2–3.5 mmol/L.
Water data
| Total hardness | 1.63 mmol/L |
|---|---|
| Calcium (mg/L) | 38 |
| Magnesium (mg/L) | 16.4 |
| Utility | Severočeské vodovody a kanalizace, a.s. (SčVK) |
How Javory compares
- Tap water in Javory is 36 % harder than the median of the 1516 cities we track in Czechia (1.2 mmol/L).
- By hardness it ranks 447 of 1516 in Czechia (1 = hardest); 70 % of these cities have softer water.
- In Ústecký kraj it is number 261 of 631 cities; the regional median is 1.31 mmol/L.
- Nearest city with clearly softer water: Choratice, 3 km away (0.55 mmol/L).
- Nearest city with clearly harder water: Prosetín, 3 km away (5.03 mmol/L).
Ranking of the hardest and softest water in Czechia →
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 Javory
| Brand | Setting for this water |
|---|---|
| Bosch | H02 |
| Miele | 9 °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 Javory water hard or soft?
It is hard: 163 mg/L as CaCO₃ (9.5 gpg, 9.1 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Javory 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 Javory water?
9.5 gpg, equal to 9.1 °dH, 16.3 °fH or 163 mg/L calcium carbonate.
What dishwasher salt setting should I use in Javory?
For 163 mg/L (9.1 °dH) check your manufacturer's table: level 4–5.
Do I need a water softener in Javory?
Recommended if you have a water heater, boiler or tankless unit: it saves repairs and detergent.
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