Water hardness in Borken
14.3 °dH very hard
Tap water in Borken is very hard: 14.3 °dH (255 mg/L · 14.9 gpg · 25.5 °fH).
Source: Stadtwerke Borken Wasserqualität (Mittelwerte 2025) (2025) · data checked 2026-10-23
Stadtwerke Borken reports a 2025 mean of 255.3 mg/L CaCO₃ (14.3 °dH, 2.55 mmol/L), hardness range 3 (hard), from a certified laboratory analysis. The value applies to Borken, Heiden and Raesfeld, excluding the Erle district. Nearby Velen, supplied by RWW, is much softer at 69.6 mg/L, so hardness changes sharply across short distances in the western Münsterland.
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water data
| Total hardness | 14.3 °dH |
|---|---|
| Utility | Stadtwerke Borken |
How Borken compares
- Tap water in Borken is 24 % harder than the median of the 809 cities we track in Germany (11.5 °dH).
- By hardness it ranks 283 of 809 in Germany (1 = hardest); 64 % of these cities have softer water.
- In Nordrhein-Westfalen it is number 35 of 153 cities; the regional median is 11.3 °dH.
- Nearest city with clearly softer water: Velen, 10 km away (3.9 °dH).
- Nearest city with clearly harder water: Rhede, 11 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 Borken
| Brand | Setting for this water |
|---|---|
| Bosch | H04 |
| Miele | 14 °dH |
| AEG / Electrolux | 3 |
| Beko | 4th |
| Hoover | S2 |
| LG | H3 |
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 Borken water hard or soft?
It is very hard: 255 mg/L as CaCO₃ (14.9 gpg, 14.3 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Borken 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 Borken water?
14.9 gpg, equal to 14.3 °dH, 25.5 °fH or 255 mg/L calcium carbonate.
What dishwasher salt setting should I use in Borken?
For 255 mg/L (14.3 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Borken?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Stadtwerke Borken Wasserqualität (Mittelwerte 2025) (2025). Method: figure published by the water supplier. Stadtwerke Borken Wasserqualität (Mittelwerte 2025) · Outdated figure? Tell us