Water hardness in Lillehammer
4.6 °dH moderately hard
Tap water in Lillehammer is moderately hard: 4.6 °dH (82 mg/L · 4.8 gpg · 8.2 °fH).
Source: Mattilsynet, Vannverksregisteret – drinking-water analyses (Lillehammer Vannverk), NLOD 2.0 (2025) · data checked 2026-10-20
Range across supply zones: 71–91 mg/L.
Lillehammer is supplied by its municipal waterworks, which in Norway normally takes surface water from lakes, with some towns using groundwater. Norwegian bedrock is mostly granite and gneiss, which gives soft water. Parts of the Mjøsa district have lime-bearing bedrock that can raise hardness. The reported hardness is 82.1 mg/L CaCO₃, with measurements from 71.4 to 91.0 mg/L. Kettles and shower screens collect some limescale over time, and regular descaling is usually enough.
Norwegian waterworks report hardness in °dH or mg/L Ca; most supplies are very soft.
Water data
| Total hardness | 4.6 °dH |
|---|---|
| Utility | Lillehammer Kommune |
How Lillehammer compares
- Tap water in Lillehammer is 130 % harder than the median of the 89 cities we track in Norway (2 °dH).
- By hardness it ranks 7 of 89 in Norway (1 = hardest); 93 % of these cities have softer water.
- In Innlandet it is number 3 of 7 cities; the regional median is 2.8 °dH.
- Nearest city with clearly softer water: Nordre Land, 38 km away (1.2 °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 Lillehammer
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 5 °dH |
| AEG / Electrolux | 2 |
| Beko | 1st |
| 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 Lillehammer water hard or soft?
It is moderately hard: 82 mg/L as CaCO₃ (4.8 gpg, 4.6 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Lillehammer 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 Lillehammer water?
4.8 gpg, equal to 4.6 °dH, 8.2 °fH or 82 mg/L calcium carbonate.
What dishwasher salt setting should I use in Lillehammer?
For 82 mg/L (4.6 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Lillehammer?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: Mattilsynet, Vannverksregisteret – drinking-water analyses (Lillehammer Vannverk), NLOD 2.0 (2025). Method: figure published by the water supplier. Mattilsynet, Vannverksregisteret – drinking-water analyses (Lillehammer Vannverk), NLOD 2.0 · Outdated figure? Tell us