Water hardness in Grane
1.6 °dH soft
Tap water in Grane is soft: 1.6 °dH (29 mg/L · 1.7 gpg · 2.9 °fH).
Source: Mattilsynet, Vannverksregisteret – drinking-water analyses (Trofors Kommunale Vannverk; Svenningdal Kommunale Vannverk; Grane Kommunale Vannverk), NLOD 2.0 (2023) · data checked 2026-10-20
Range across supply zones: 7–43 mg/L.
Grane has three registered supply systems, and the figure here is their median, 28.6 mg/L CaCO₃, within 7.1 to 42.8 mg/L for 2023. Trofors, the largest system, is at the soft end of that range. All three are soft, so scale builds up slowly.
Norwegian waterworks report hardness in °dH or mg/L Ca; most supplies are very soft.
Water data
| Total hardness | 1.6 °dH |
|---|---|
| Utility | Grane Kommune |
How Grane compares
- Tap water in Grane is 20 % softer than the median of the 89 cities we track in Norway (2 °dH).
- By hardness it ranks 56 of 89 in Norway (1 = hardest); 38 % of these cities have softer water.
- In Nordland it is number 6 of 10 cities; the regional median is 1.9 °dH.
- Nearest city with clearly softer water: Herøy, 70 km away (0.4 °dH).
- Nearest city with clearly harder water: Hattfjelldal, 28 km away (4.8 °dH).
Ranking of the hardest and softest water in Norway →
What it means at home
- Little or no limescale in kettles, water heaters or washing machines.
- Soap lathers easily; water does not dry skin or hair.
- Dishwasher: salt setting at minimum or off.
- No softener needed; a jug filter only changes taste.
How much salt will you use for softening?
No. Water this soft does not need softening.
Descale a coffee machine or kettle about every 6 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Grane
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 2 °dH |
| AEG / Electrolux | 1 |
| Beko | 1st |
| Hoover | S0 |
| LG | H0 |
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 Grane water hard or soft?
It is soft: 29 mg/L as CaCO₃ (1.7 gpg, 1.6 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Grane 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 Grane water?
1.7 gpg, equal to 1.6 °dH, 2.9 °fH or 29 mg/L calcium carbonate.
What dishwasher salt setting should I use in Grane?
For 29 mg/L (1.6 °dH) check your manufacturer's table: level 0–1, usually no salt.
Do I need a water softener in Grane?
No. With soft water a softener adds nothing.
Source
Source: Mattilsynet, Vannverksregisteret – drinking-water analyses (Trofors Kommunale Vannverk; Svenningdal Kommunale Vannverk; Grane Kommunale Vannverk), NLOD 2.0 (2023). Method: figure published by the water supplier. Mattilsynet, Vannverksregisteret – drinking-water analyses (Trofors Kommunale Vannverk; Svenningdal Kommunale Vannverk; Grane Kommunale Vannverk), NLOD 2.0 · Outdated figure? Tell us