Water hardness in Markvarec
4.85 mmol/L very hard
Tap water in Markvarec is very hard: 4.85 mmol/L (485 mg/L · 28.4 gpg · 27.2 °dH).
Source: SčVK, Moje obec – kvalita vody (aktuální hodnoty) (2026) · data checked 2026-10-21
Markvarec, in the Louny area of Ústecký kraj, has a reported hardness of 485.4 mg/L from SčVK. That is very hard and well above the national picture. We show the figure as published and have not independently confirmed it. Scale will build up fast in kettles, boilers and pipes, so a softener or frequent descaling is worth considering.
Czech suppliers report "Vápník a hořčík" in mmol/L; the recommended range is 2–3.5 mmol/L.
Water data
| Total hardness | 4.85 mmol/L |
|---|---|
| Calcium (mg/L) | 128 |
| Magnesium (mg/L) | 40.3 |
| Utility | Severočeské vodovody a kanalizace, a.s. (SčVK) |
How Markvarec compares
- Tap water in Markvarec is 304 % harder than the median of the 1516 cities we track in Czechia (1.2 mmol/L).
- By hardness it ranks 44 of 1516 in Czechia (1 = hardest); 97 % of these cities have softer water.
- In Ústecký kraj it is number 44 of 631 cities; the regional median is 1.31 mmol/L.
- Nearest city with clearly softer water: Hřivice, 3 km away (0.78 mmol/L).
- Nearest city with clearly harder water: Chodovlice, 30 km away (6.14 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 Markvarec
| Brand | Setting for this water |
|---|---|
| Bosch | H06 |
| Miele | 27 °dH |
| AEG / Electrolux | 6 |
| 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 Markvarec water hard or soft?
It is very hard: 485 mg/L as CaCO₃ (28.4 gpg, 27.2 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Markvarec 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 Markvarec water?
28.4 gpg, equal to 27.2 °dH, 48.5 °fH or 485 mg/L calcium carbonate.
What dishwasher salt setting should I use in Markvarec?
For 485 mg/L (27.2 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Markvarec?
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