Water hardness in Bad Ischl
15 °dH very hard
Tap water in Bad Ischl is very hard: 15 °dH (268 mg/L · 15.6 gpg · 26.8 °fH).
Source: Stadtgemeinde Bad Ischl Wasserhaerte Trinkwasseruntersuchung 2026 (2026) · data checked 2026-10-20
The Bad Ischl municipal website states one hardness figure for the whole urban area, which converts to 267.8 mg/L CaCO₃. The page carries no sampling date and does not say whether it means total or carbonate hardness. We read it as total hardness in German degrees, the usual Austrian convention. A linked laboratory report was not read, so treat the value as indicative.
Angabe in °dH; Härtebereiche wie in Deutschland üblich.
Water data
| Total hardness | 15 °dH |
|---|---|
| Utility | Stadtgemeinde Bad Ischl (Wasserversorgung) |
How Bad Ischl compares
- Tap water in Bad Ischl is 7 % harder than the median of the 159 cities we track in Austria (14 °dH).
- By hardness it ranks 47 of 159 in Austria (1 = hardest); 71 % of these cities have softer water.
- In Oberösterreich it is number 3 of 10 cities; the regional median is 14.5 °dH.
- Nearest city with clearly softer water: Bischofshofen, 45 km away (6.1 °dH).
- Nearest city with clearly harder water: Sankt Valentin, 84 km away (21.3 °dH).
Ranking of the hardest and softest water in Austria →
What it means at home
- Severe scale: heater elements and washing-machine heaters fail early.
- Detergent use is very high; taps and screens coat within days.
- Dishwasher at maximum salt setting.
- An ion-exchange softener is practically essential; RO for drinking water.
How much salt will you use for softening?
Yes. At this hardness a softener pays for itself through appliance life and detergent.
Descale a coffee machine or kettle about every 1 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Bad Ischl
| Brand | Setting for this water |
|---|---|
| Bosch | H04 |
| Miele | 15 °dH |
| AEG / Electrolux | 4 |
| Beko | 4th |
| Hoover | S2 |
| LG | H3 |
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 Bad Ischl water hard or soft?
It is very hard: 268 mg/L as CaCO₃ (15.6 gpg, 15 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Bad Ischl safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Angabe in °dH; Härtebereiche wie in Deutschland üblich.
How many grains per gallon is Bad Ischl water?
15.6 gpg, equal to 15 °dH, 26.8 °fH or 268 mg/L calcium carbonate.
What dishwasher salt setting should I use in Bad Ischl?
For 268 mg/L (15 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Bad Ischl?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Stadtgemeinde Bad Ischl Wasserhaerte Trinkwasseruntersuchung 2026 (2026). Method: figure published by the water supplier. Stadtgemeinde Bad Ischl Wasserhaerte Trinkwasseruntersuchung 2026 · Outdated figure? Tell us