Water hardness in Werdohl
2.3 °dH soft
Tap water in Werdohl is soft: 2.3 °dH (41 mg/L · 2.4 gpg · 4.1 °fH).
Source: Trinkwasseranalyse Wasserwerk Treckinghausen – Versorgung Werdohler Netzgebiet (Jahresmittelwert 2025) (2025) · data checked 2026-11-02
Werdohl is supplied from the Treckinghausen waterworks via WBV Lüdenscheid, and the 2025 annual mean is 41.0 mg/L CaCO₃, with calcium at 11.9 mg/L and magnesium at 2.2 mg/L. That is soft, and Lüdenscheid reports 50.0 mg/L, in line with it. Neuenrade, only 3 km away, reports 159.8 mg/L. Scale is rarely a problem, so a softener is not needed.
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water data
| Total hardness | 2.3 °dH |
|---|---|
| Calcium (mg/L) | 11.9 |
| Magnesium (mg/L) | 2.2 |
| Utility | Stadtwerke Werdohl / WBV Lüdenscheid (Wasserwerk Treckinghausen) |
How Werdohl compares
- Tap water in Werdohl is 80 % softer than the median of the 809 cities we track in Germany (11.5 °dH).
- By hardness it ranks 806 of 809 in Germany (1 = hardest); 0 % of these cities have softer water.
- In Nordrhein-Westfalen it is number 153 of 153 cities; the regional median is 11.3 °dH.
- Nearest city with clearly harder water: Neuenrade, 3 km away (9 °dH).
Ranking of the hardest and softest water in Germany →
What it means at home
- Little or no limescale in kettles, water heaters or washing machines.
- Soap lathers easily; water does not dry skin or hair.
- Dishwasher: salt setting at minimum or off.
- No softener needed; a jug filter only changes taste.
How much salt will you use for softening?
No. Water this soft does not need softening.
Descale a coffee machine or kettle about every 6 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Werdohl
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 2 °dH |
| AEG / Electrolux | 1 |
| Beko | 1st |
| Hoover | S0 |
| LG | H0 |
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 Werdohl water hard or soft?
It is soft: 41 mg/L as CaCO₃ (2.4 gpg, 2.3 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Werdohl 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 Werdohl water?
2.4 gpg, equal to 2.3 °dH, 4.1 °fH or 41 mg/L calcium carbonate.
What dishwasher salt setting should I use in Werdohl?
For 41 mg/L (2.3 °dH) check your manufacturer's table: level 0–1, usually no salt.
Do I need a water softener in Werdohl?
No. With soft water a softener adds nothing.
Source
Source: Trinkwasseranalyse Wasserwerk Treckinghausen – Versorgung Werdohler Netzgebiet (Jahresmittelwert 2025) (2025). Method: figure published by the water supplier. Trinkwasseranalyse Wasserwerk Treckinghausen – Versorgung Werdohler Netzgebiet (Jahresmittelwert 2025) · Outdated figure? Tell us