Water hardness in Hattfjelldal
4.8 °dH moderately hard
Tap water in Hattfjelldal is moderately hard: 4.8 °dH (86 mg/L · 5 gpg · 8.6 °fH).
Source: Mattilsynet, Vannverksregisteret – drinking-water analyses (Hattfjelldal Vannverk), NLOD 2.0 (2025) · data checked 2026-10-20
Hattfjelldal Vannverk reports 4.8 °dH for 2025, which is 85.7 mg/L CaCO₃. That is higher than most of the Nordland places on this site, though still moderate by international standards. We have not checked the geology around the intake. Expect some limescale on kettles and shower screens over time.
Norwegian waterworks report hardness in °dH or mg/L Ca; most supplies are very soft.
Water data
| Total hardness | 4.8 °dH |
|---|---|
| Utility | Hattfjelldal Kommune |
How Hattfjelldal compares
- Tap water in Hattfjelldal is 140 % harder than the median of the 89 cities we track in Norway (2 °dH).
- By hardness it ranks 6 of 89 in Norway (1 = hardest); 94 % of these cities have softer water.
- In Nordland it is number 1 of 10 cities; the regional median is 1.9 °dH.
- Nearest city with clearly softer water: Grane, 28 km away (1.6 °dH).
Ranking of the hardest and softest water in Norway →
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 Hattfjelldal
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 5 °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 Hattfjelldal water hard or soft?
It is moderately hard: 86 mg/L as CaCO₃ (5 gpg, 4.8 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Hattfjelldal safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Norwegian waterworks report hardness in °dH or mg/L Ca; most supplies are very soft.
How many grains per gallon is Hattfjelldal water?
5 gpg, equal to 4.8 °dH, 8.6 °fH or 86 mg/L calcium carbonate.
What dishwasher salt setting should I use in Hattfjelldal?
For 86 mg/L (4.8 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Hattfjelldal?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: Mattilsynet, Vannverksregisteret – drinking-water analyses (Hattfjelldal Vannverk), NLOD 2.0 (2025). Method: figure published by the water supplier. Mattilsynet, Vannverksregisteret – drinking-water analyses (Hattfjelldal Vannverk), NLOD 2.0 · Outdated figure? Tell us