Water hardness in Roermond
10.8 °dH very hard
Tap water in Roermond is very hard: 10.8 °dH (193 mg/L · 11.3 gpg · 19.3 °fH).
Source: WML / Limburgs Drinkwater, gemeentepagina (2026) · data checked 2026-10-29
WML reports 192.8 mg/L CaCO3 for Roermond, in the very hard category. Scale builds quickly on kettles, boilers and shower screens, and a whole-house softener is worth considering.
Dutch suppliers report °dH; most networks are softened centrally to 5.6–8.4 °dH.
Water data
| Total hardness | 10.8 °dH |
|---|---|
| Utility | WML |
How Roermond compares
- Tap water in Roermond is 43 % harder than the median of the 654 cities we track in the Netherlands (7.5 °dH).
- By hardness it ranks 6 of 654 in the Netherlands (1 = hardest); 99 % of these cities have softer water.
- In Limburg it is number 1 of 6 cities; the regional median is 8.3 °dH.
- Nearest city with clearly softer water: Weert, 21 km away (7.9 °dH).
Ranking of the hardest and softest water in the Netherlands →
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 Roermond
| Brand | Setting for this water |
|---|---|
| Bosch | H03 |
| Miele | 11 °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 Roermond water hard or soft?
It is very hard: 193 mg/L as CaCO₃ (11.3 gpg, 10.8 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Roermond safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Dutch suppliers report °dH; most networks are softened centrally to 5.6–8.4 °dH.
How many grains per gallon is Roermond water?
11.3 gpg, equal to 10.8 °dH, 19.3 °fH or 193 mg/L calcium carbonate.
What dishwasher salt setting should I use in Roermond?
For 193 mg/L (10.8 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Roermond?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: WML / Limburgs Drinkwater, gemeentepagina (2026). Method: figure published by the water supplier. WML / Limburgs Drinkwater, gemeentepagina · Outdated figure? Tell us