Water hardness in Gildeskål
3.4 °dH moderately hard
Tap water in Gildeskål is moderately hard: 3.4 °dH (61 mg/L · 3.5 gpg · 6.1 °fH).
Source: Mattilsynet, Vannverksregisteret – drinking-water analyses (Inndyr Vannverk; Mårnes - Våg Vannverk; Tøa Vannverk), NLOD 2.0 (2024) · data checked 2026-10-21
Range across supply zones: 32–124 mg/L.
Gildeskål has three supply systems with clearly different water. Inndyr Vannverk is at 32.1 mg/L CaCO₃, Tøa Vannverk at 60.7 mg/L, and Mårnes–Våg Vannverk at 124.1 mg/L. The figure here is the median, 60.7 mg/L. Check which waterworks serves your address, since a softener only makes sense in the harder zone.
Norwegian waterworks report hardness in °dH or mg/L Ca; most supplies are very soft.
Water data
| Total hardness | 3.4 °dH |
|---|---|
| Utility | Gildeskål Kommune |
How Gildeskål compares
- Tap water in Gildeskål is 70 % harder than the median of the 89 cities we track in Norway (2 °dH).
- By hardness it ranks 12 of 89 in Norway (1 = hardest); 86 % of these cities have softer water.
- In Nordland it is number 2 of 10 cities; the regional median is 1.9 °dH.
- Nearest city with clearly softer water: Bodø, 32 km away (2.5 °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 Gildeskål
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 3 °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 Gildeskål water hard or soft?
It is moderately hard: 61 mg/L as CaCO₃ (3.5 gpg, 3.4 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Gildeskål 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 Gildeskål water?
3.5 gpg, equal to 3.4 °dH, 6.1 °fH or 61 mg/L calcium carbonate.
What dishwasher salt setting should I use in Gildeskål?
For 61 mg/L (3.4 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Gildeskål?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: Mattilsynet, Vannverksregisteret – drinking-water analyses (Inndyr Vannverk; Mårnes - Våg Vannverk; Tøa Vannverk), NLOD 2.0 (2024). Method: figure published by the water supplier. Mattilsynet, Vannverksregisteret – drinking-water analyses (Inndyr Vannverk; Mårnes - Våg Vannverk; Tøa Vannverk), NLOD 2.0 · Outdated figure? Tell us