Water hardness in Rychnov
1.46 mmol/L hard
Tap water in Rychnov is hard: 1.46 mmol/L (146 mg/L · 8.5 gpg · 8.2 °dH).
Source: SčVK, Moje obec – kvalita vody (aktuální hodnoty) (2026) · data checked 2026-10-21
SčVK lists 146.1 mg/L CaCO₃ for Rychnov in the Ústecký kraj, which counts as hard. The utility does not name the supply source for this village, so the geology behind the figure is not confirmed. Kettles, washing machines and shower heads will collect scale faster than in moderate areas, so descale them regularly.
Czech suppliers report "Vápník a hořčík" in mmol/L; the recommended range is 2–3.5 mmol/L.
Water data
| Total hardness | 1.46 mmol/L |
|---|---|
| Calcium (mg/L) | 50 |
| Magnesium (mg/L) | 4.83 |
| Utility | Severočeské vodovody a kanalizace, a.s. (SčVK) |
How Rychnov compares
- Tap water in Rychnov is 22 % harder than the median of the 1516 cities we track in Czechia (1.2 mmol/L).
- By hardness it ranks 491 of 1516 in Czechia (1 = hardest); 68 % of these cities have softer water.
- In Ústecký kraj it is number 280 of 631 cities; the regional median is 1.31 mmol/L.
- Nearest city with clearly softer water: Rytířov, 2 km away (0.89 mmol/L).
- Nearest city with clearly harder water: Těchlovice, 4 km away (2.68 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 Rychnov
| Brand | Setting for this water |
|---|---|
| Bosch | H02 |
| Miele | 8 °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 Rychnov water hard or soft?
It is hard: 146 mg/L as CaCO₃ (8.5 gpg, 8.2 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Rychnov 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 Rychnov water?
8.5 gpg, equal to 8.2 °dH, 14.6 °fH or 146 mg/L calcium carbonate.
What dishwasher salt setting should I use in Rychnov?
For 146 mg/L (8.2 °dH) check your manufacturer's table: level 4–5.
Do I need a water softener in Rychnov?
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