Water hardness in Stoholm
8.8 °dH hard
Tap water in Stoholm is hard: 8.8 °dH (157 mg/L · 9.2 gpg · 15.7 °fH).
Source: GEUS, Drikkevandets hårdhed i Danmark (Jupiter database), CC BY 4.0 (2023) · data checked 2026-10-20
Range across supply zones: 148–179 mg/L.
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 | 8.8 °dH |
|---|
How Stoholm compares
- Tap water in Stoholm is 41 % softer than the median of the 388 cities we track in Denmark (14.9 °dH).
- By hardness it ranks 337 of 388 in Denmark (1 = hardest); 13 % of these cities have softer water.
- In Central Jutland it is number 65 of 90 cities; the regional median is 11.7 °dH.
- Nearest city with clearly softer water: Karup, 20 km away (5.3 °dH).
- Nearest city with clearly harder water: Hinnerup, 28 km away (12 °dH).
Ranking of the hardest and softest water in Denmark →
What it means at home
- Fast scale on taps, shower screens and kettle; white spots on glassware.
- Water heater: efficiency loss and element failures within years if unprotected.
- Dry skin and dull hair after showering are common.
- Softener recommended; jug or reverse osmosis for drinking.
How much salt will you use for softening?
Recommended, especially with a heater or boiler: scale cuts efficiency and shortens its life.
Descale a coffee machine or kettle about every 2 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Stoholm
| Brand | Setting for this water |
|---|---|
| Bosch | H02 |
| Miele | 9 °dH |
| AEG / Electrolux | 2 |
| Beko | 3rd |
| Hoover | S1 |
| 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 Stoholm water hard or soft?
It is hard: 157 mg/L as CaCO₃ (9.2 gpg, 8.8 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Stoholm 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 Stoholm water?
9.2 gpg, equal to 8.8 °dH, 15.7 °fH or 157 mg/L calcium carbonate.
What dishwasher salt setting should I use in Stoholm?
For 157 mg/L (8.8 °dH) check your manufacturer's table: level 4–5.
Do I need a water softener in Stoholm?
Recommended if you have a water heater, boiler or tankless unit: it saves repairs and detergent.
Source
Source: GEUS, Drikkevandets hårdhed i Danmark (Jupiter database), CC BY 4.0 (2023). Method: figure published by the water supplier. GEUS, Drikkevandets hårdhed i Danmark (Jupiter database), CC BY 4.0 · Outdated figure? Tell us