Water hardness in Konojedy
5.94 mmol/L very hard
Tap water in Konojedy is very hard: 5.94 mmol/L (595 mg/L · 34.8 gpg · 33.3 °dH).
Source: SčVK, Moje obec – kvalita vody (aktuální hodnoty) (2026) · data checked 2026-10-23
Range across supply zones: 593–598 mg/L.
Severočeské vodovody a kanalizace (SčVK) reports 595 mg/L CaCO₃ for Konojedy in Ústí nad Labem region, with a spread of 592.5 to 597.5 mg/L between values. That is very hard water, and the value is above 500 mg/L, so it needs auditor approval. We have not confirmed which water source feeds this village, so treat the cause as unverified. Expect heavy limescale in kettles and heaters, and check descaling intervals.
Czech suppliers report "Vápník a hořčík" in mmol/L; the recommended range is 2–3.5 mmol/L.
Water data
| Total hardness | 5.94 mmol/L |
|---|---|
| Calcium (mg/L) | 180.5 |
| Magnesium (mg/L) | 35.1 |
| Utility | Severočeské vodovody a kanalizace, a.s. (SčVK) |
How Konojedy compares
- Tap water in Konojedy is 395 % harder than the median of the 1516 cities we track in Czechia (1.2 mmol/L).
- By hardness it ranks 9 of 1516 in Czechia (1 = hardest); 99 % of these cities have softer water.
- In Ústecký kraj it is number 9 of 631 cities; the regional median is 1.31 mmol/L.
- Nearest city with clearly softer water: Bílý Kostelec, 2 km away (1.39 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 Konojedy
| Brand | Setting for this water |
|---|---|
| Bosch | H07 |
| Miele | 33 °dH |
| AEG / Electrolux | 7 |
| Beko | 6th |
| Hoover | S4 |
| LG | H4 |
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 Konojedy water hard or soft?
It is very hard: 595 mg/L as CaCO₃ (34.8 gpg, 33.3 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Konojedy 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 Konojedy water?
34.8 gpg, equal to 33.3 °dH, 59.5 °fH or 595 mg/L calcium carbonate.
What dishwasher salt setting should I use in Konojedy?
For 595 mg/L (33.3 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Konojedy?
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