Water hardness in Westerburg
4.2 °dH moderately hard
Tap water in Westerburg is moderately hard: 4.2 °dH (76 mg/L · 4.4 gpg · 7.5 °fH).
Source: Verbandsgemeindewerke Westerburg, Chemische Stoffe und Kenngrößen nach Anlagen der Trinkwasserverordnung, Trinkwasseruntersuchungen 2025 (2025) · data checked 2026-11-06
Range across supply zones: 75–76 mg/L.
2 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| °dH | mg/L | ||
|---|---|---|---|
| Entnahmestelle Westerburg (HB Hub) | 4.2 | 75 | moderately hard |
| Entnahmestelle Westerburg - Wengenroth (HB Reinholdstollen) | 4.3 | 76 | moderately hard |
The Verbandsgemeindewerke Westerburg (Rhineland-Palatinate) publish their 2025 drinking-water analyses by facility. For two zones the median is 75.5 mg/L CaCO₃ and the range is 75.0 to 76.0 mg/L (moderate category). The two zones differ very little.
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water data
| Total hardness | 4.2 °dH |
|---|---|
| Utility | Verbandsgemeindewerke Westerburg (Eigenbetrieb der Verbandsgemeinde Westerburg) |
How Westerburg compares
- Tap water in Westerburg is 63 % softer than the median of the 809 cities we track in Germany (11.5 °dH).
- By hardness it ranks 765 of 809 in Germany (1 = hardest); 5 % of these cities have softer water.
- In Rheinland-Pfalz it is number 21 of 25 cities; the regional median is 9.9 °dH.
- Nearest city with clearly softer water: Olpe, 53 km away (2.9 °dH).
- Nearest city with clearly harder water: Waldbrunn (Westerwald), 10 km away (7.7 °dH).
Ranking of the hardest and softest water in Germany →
What it means at home
- Visible kettle scale every few weeks; vinegar or citric acid is enough.
- Water heater and washing machine: some long-term scale; a scale inhibitor slows it.
- Dishwasher: medium salt setting.
- Softener optional; pays off mainly with a gas boiler or tankless heater.
How much salt will you use for softening?
Optional. A scale inhibitor or a small softener protects the heater; soap savings are modest.
Descale a coffee machine or kettle about every 3 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Westerburg
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 4 °dH |
| AEG / Electrolux | 2 |
| Beko | 1st |
| Hoover | S1 |
| LG | H1 |
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 Westerburg water hard or soft?
It is moderately hard: 76 mg/L as CaCO₃ (4.4 gpg, 4.2 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Westerburg 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 Westerburg water?
4.4 gpg, equal to 4.2 °dH, 7.5 °fH or 76 mg/L calcium carbonate.
What dishwasher salt setting should I use in Westerburg?
For 76 mg/L (4.2 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Westerburg?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: Verbandsgemeindewerke Westerburg, Chemische Stoffe und Kenngrößen nach Anlagen der Trinkwasserverordnung, Trinkwasseruntersuchungen 2025 (2025). Method: figure published by the water supplier. Verbandsgemeindewerke Westerburg, Chemische Stoffe und Kenngrößen nach Anlagen der Trinkwasserverordnung, Trinkwasseruntersuchungen 2025 · Outdated figure? Tell us