Water hardness in Voerde
11.8 °dH very hard
Tap water in Voerde is very hard: 11.8 °dH (211 mg/L · 12.3 gpg · 21.1 °fH).
Source: Stadtwerke Dinslaken GmbH, Trinkwasseranalyse Q2 2026, Wasserwerk Voerde-Löhnen (2026) · data checked 2026-10-23
Stadtwerke Dinslaken publishes quarterly lab reports for the Voerde-Löhnen waterworks. The Q2 2026 report gives 210.6 mg/L CaCO₃. This page covers that waterworks only, and other sources that may supply parts of Voerde are not included. Check your annual water notice if your street is outside the Löhnen supply area.
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water data
| Total hardness | 11.8 °dH |
|---|---|
| Utility | Stadtwerke Dinslaken (Wasserwerk Voerde-Löhnen) |
How Voerde compares
- Tap water in Voerde is close to the median of the 809 cities we track in Germany (11.5 °dH).
- By hardness it ranks 390 of 809 in Germany (1 = hardest); 52 % of these cities have softer water.
- In Nordrhein-Westfalen it is number 66 of 153 cities; the regional median is 11.3 °dH.
- Nearest city with clearly softer water: Mülheim an der Ruhr, 26 km away (8.3 °dH).
- Nearest city with clearly harder water: Rhede, 25 km away (19.1 °dH).
Ranking of the hardest and softest water in Germany →
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 Voerde
| Brand | Setting for this water |
|---|---|
| Bosch | H03 |
| Miele | 12 °dH |
| AEG / Electrolux | 3 |
| Beko | 3rd |
| Hoover | S2 |
| 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 Voerde water hard or soft?
It is very hard: 211 mg/L as CaCO₃ (12.3 gpg, 11.8 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Voerde 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 Voerde water?
12.3 gpg, equal to 11.8 °dH, 21.1 °fH or 211 mg/L calcium carbonate.
What dishwasher salt setting should I use in Voerde?
For 211 mg/L (11.8 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Voerde?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Stadtwerke Dinslaken GmbH, Trinkwasseranalyse Q2 2026, Wasserwerk Voerde-Löhnen (2026). Method: figure published by the water supplier. Stadtwerke Dinslaken GmbH, Trinkwasseranalyse Q2 2026, Wasserwerk Voerde-Löhnen · Outdated figure? Tell us