Water hardness in Grävenwiesbach
7.9 °dH hard
Tap water in Grävenwiesbach is hard: 7.9 °dH (141 mg/L · 8.2 gpg · 14.1 °fH).
Source: Gemeinde Grävenwiesbach, Öffentliche Bekanntmachung der Härtebereiche in den Versorgungszonen (WRMG §9), dated 26.03.2026 (2025-09) · data checked 2026-11-06
Range across supply zones: 90–182 mg/L.
7 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| °dH | mg/L | ||
|---|---|---|---|
| Ortsteil Grävenwiesbach Hochzone | 7.9 | 141 | hard |
| Ortsteil Grävenwiesbach Tiefzone | 10.2 | 182 | very hard |
| Ortsteil Heinzenberg | 6 | 108 | moderately hard |
| Ortsteil Hundstadt | 8.3 | 149 | hard |
| Ortsteil Laubach | 5.1 | 91 | moderately hard |
| Ortsteil Mönstadt | 9 | 160 | hard |
| Ortsteil Naunstadt | 5 | 90 | moderately hard |
In March 2026 Grävenwiesbach published the hardness ranges for its seven supply zones (under § 9 WRMG); the underlying analyses date from September 2025. The value for the municipality is 141.0 mg/L CaCO₃, and the zones range from 90.1 to 181.7 mg/L. The municipality's notice assigns each zone separately.
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water data
| Total hardness | 7.9 °dH |
|---|---|
| Utility | Gemeinde Grävenwiesbach (Gemeindewasserversorgung und Ortsnetze) |
How Grävenwiesbach compares
- Tap water in Grävenwiesbach is 31 % softer than the median of the 809 cities we track in Germany (11.5 °dH).
- By hardness it ranks 573 of 809 in Germany (1 = hardest); 29 % of these cities have softer water.
- Nearest city with clearly softer water: Waldems, 18 km away (6.2 °dH).
- Nearest city with clearly harder water: Selters (Taunus), 5 km away (17.7 °dH).
Ranking of the hardest and softest water in Germany →
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 Grävenwiesbach
| Brand | Setting for this water |
|---|---|
| Bosch | H01 |
| 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 Grävenwiesbach water hard or soft?
It is hard: 141 mg/L as CaCO₃ (8.2 gpg, 7.9 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Grävenwiesbach safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
How many grains per gallon is Grävenwiesbach water?
8.2 gpg, equal to 7.9 °dH, 14.1 °fH or 141 mg/L calcium carbonate.
What dishwasher salt setting should I use in Grävenwiesbach?
For 141 mg/L (7.9 °dH) check your manufacturer's table: level 4–5.
Do I need a water softener in Grävenwiesbach?
Recommended if you have a water heater, boiler or tankless unit: it saves repairs and detergent.
Source
Source: Gemeinde Grävenwiesbach, Öffentliche Bekanntmachung der Härtebereiche in den Versorgungszonen (WRMG §9), dated 26.03.2026 (2025-09). Method: figure published by the water supplier. Gemeinde Grävenwiesbach, Öffentliche Bekanntmachung der Härtebereiche in den Versorgungszonen (WRMG §9), dated 26.03.2026 · Outdated figure? Tell us