Water hardness in Struer
6.1 °dH moderately hard
Tap water in Struer is moderately hard: 6.1 °dH (109 mg/L · 6.4 gpg · 10.9 °fH).
Source: GEUS, Drikkevandets hårdhed i Danmark (Jupiter database), CC BY 4.0 (2022) · data checked 2026-10-19
Range across supply zones: 89–129 mg/L.
This figure is over 3 years old; hardness may have changed.
All of Denmark's tap water is groundwater, and in west Jutland it is pumped mostly from sandy meltwater deposits that hold less lime. The GEUS-reported hardness is 108.9 mg/L CaCO₃, with values from 89.2 to 128.5 mg/L depending on the street. The figure dates from 2022 and may have changed. Scale builds up moderately, and regular descaling of kettles and showers is usually enough.
Danish waterworks report hardness in °dH; GEUS classes: soft < 8, medium hard 8–12, fairly hard 12–18, hard 18–30, very hard > 30 °dH. Most Danish tap water is groundwater and hard.
Water data
| Total hardness | 6.1 °dH |
|---|
How Struer compares
- Tap water in Struer is 59 % softer than the median of the 388 cities we track in Denmark (14.9 °dH).
- By hardness it ranks 381 of 388 in Denmark (1 = hardest); 2 % of these cities have softer water.
- In Central Jutland it is number 85 of 90 cities; the regional median is 11.7 °dH.
- Nearest city with clearly softer water: Brande, 69 km away (4.7 °dH).
- Nearest city with clearly harder water: Holstebro, 15 km away (10.3 °dH).
Ranking of the hardest and softest water in Denmark →
What it means at home
- Visible kettle scale every few weeks; vinegar or citric acid is enough.
- Water heater and washing machine: some long-term scale; a scale inhibitor slows it.
- Dishwasher: medium salt setting.
- Softener optional; pays off mainly with a gas boiler or tankless heater.
How much salt will you use for softening?
Optional. A scale inhibitor or a small softener protects the heater; soap savings are modest.
Descale a coffee machine or kettle about every 3 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Struer
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 6 °dH |
| AEG / Electrolux | 2 |
| Beko | 2nd |
| Hoover | S1 |
| LG | H1 |
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 Struer water hard or soft?
It is moderately hard: 109 mg/L as CaCO₃ (6.4 gpg, 6.1 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Struer safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Danish waterworks report hardness in °dH; GEUS classes: soft < 8, medium hard 8–12, fairly hard 12–18, hard 18–30, very hard > 30 °dH. Most Danish tap water is groundwater and hard.
How many grains per gallon is Struer water?
6.4 gpg, equal to 6.1 °dH, 10.9 °fH or 109 mg/L calcium carbonate.
What dishwasher salt setting should I use in Struer?
For 109 mg/L (6.1 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Struer?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: GEUS, Drikkevandets hårdhed i Danmark (Jupiter database), CC BY 4.0 (2022). Method: figure published by the water supplier. GEUS, Drikkevandets hårdhed i Danmark (Jupiter database), CC BY 4.0 · Outdated figure? Tell us