Water hardness in Sola
3 °dH soft
Tap water in Sola is soft: 3 °dH (54 mg/L · 3.1 gpg · 5.4 °fH).
Source: IVAR, Spørsmål og svar (2026) · data checked 2026-10-29
Sola gets its water through IVAR, the inter-municipal water company for the Stavanger region, which answers about 53.6 mg/L CaCO₃ on its question-and-answer page. That is at the upper end of soft. Scale is still modest, but it may be visible on kettles and taps over time.
Norwegian waterworks report hardness in °dH or mg/L Ca; most supplies are very soft.
Water data
| Total hardness | 3 °dH |
|---|---|
| Utility | IVAR |
How Sola compares
- Tap water in Sola is 50 % harder than the median of the 89 cities we track in Norway (2 °dH).
- By hardness it ranks 19 of 89 in Norway (1 = hardest); 77 % of these cities have softer water.
- In Rogaland it is number 1 of 4 cities; the regional median is 2.5 °dH.
- Nearest city with clearly softer water: Hjelmeland, 49 km away (0.6 °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 Sola
| 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 Sola water hard or soft?
It is soft: 54 mg/L as CaCO₃ (3.1 gpg, 3 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Sola 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 Sola water?
3.1 gpg, equal to 3 °dH, 5.4 °fH or 54 mg/L calcium carbonate.
What dishwasher salt setting should I use in Sola?
For 54 mg/L (3 °dH) check your manufacturer's table: level 0–1, usually no salt.
Do I need a water softener in Sola?
No. With soft water a softener adds nothing.
Source
Source: IVAR, Spørsmål og svar (2026). Method: figure published by the water supplier. IVAR, Spørsmål og svar · Outdated figure? Tell us