Water hardness in Mönchengladbach
13.5 °dH very hard
Tap water in Mönchengladbach is very hard: 13.5 °dH (241 mg/L · 14.1 gpg · 24.1 °fH).
Source: NEW NiederrheinWasser – Trinkwasser Mönchengladbach 2024 Gesamtübersicht (2024) · data checked 2026-10-23
Range across supply zones: 204–274 mg/L.
6 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| °dH | mg/L | ||
|---|---|---|---|
| Wasserwerk Gatzweiler | 11.4 | 204 | very hard |
| Wasserwerk Helenabrunn | 12.5 | 223 | very hard |
| Wasserwerk Hoppbruch | 12.4 | 222 | very hard |
| Wasserwerk Rasseln | 15.4 | 274 | very hard |
| Wasserwerk Reststrauch | 14.6 | 260 | very hard |
| Wasserwerk Rheindahlen | 14.8 | 264 | very hard |
NEW NiederrheinWasser reports 2024 values for six waterworks in Mönchengladbach. The city figure of 241.4 mg/L CaCO₃ is computed from them and the range runs from 204.2 mg/L (Gatzweiler) to 274.0 mg/L (Rasseln). All six sit in the hard to very hard band, so limescale on kettles and heating elements is a regular issue across the city.
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water data
| Total hardness | 13.5 °dH |
|---|---|
| Calcium (mg/L) | 62.7 |
| Magnesium (mg/L) | 15.9 |
| Utility | NEW NiederrheinWasser GmbH |
How Mönchengladbach compares
- Tap water in Mönchengladbach is 18 % harder than the median of the 809 cities we track in Germany (11.5 °dH).
- By hardness it ranks 312 of 809 in Germany (1 = hardest); 62 % of these cities have softer water.
- In Nordrhein-Westfalen it is number 44 of 153 cities; the regional median is 11.3 °dH.
- Nearest city with clearly softer water: Wegberg, 12 km away (10.7 °dH).
- Nearest city with clearly harder water: Ratingen, 31 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 Mönchengladbach
| Brand | Setting for this water |
|---|---|
| Bosch | H04 |
| Miele | 14 °dH |
| AEG / Electrolux | 3 |
| Beko | 4th |
| 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 Mönchengladbach water hard or soft?
It is very hard: 241 mg/L as CaCO₃ (14.1 gpg, 13.5 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Mönchengladbach 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 Mönchengladbach water?
14.1 gpg, equal to 13.5 °dH, 24.1 °fH or 241 mg/L calcium carbonate.
What dishwasher salt setting should I use in Mönchengladbach?
For 241 mg/L (13.5 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Mönchengladbach?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: NEW NiederrheinWasser – Trinkwasser Mönchengladbach 2024 Gesamtübersicht (2024). Method: computed from supplier's calcium and magnesium. NEW NiederrheinWasser – Trinkwasser Mönchengladbach 2024 Gesamtübersicht · Outdated figure? Tell us