Water hardness in Spittal an der Drau
10.8 °dH very hard
Tap water in Spittal an der Drau is very hard: 10.8 °dH (192 mg/L · 11.2 gpg · 19.2 °fH).
Source: Stadtgemeinde Spittal an der Drau, Abnehmerinformation gemäß §6 TWV (Untersuchungsergebnisse 2023) (2023) · data checked 2026-10-20
Range across supply zones: 84–300 mg/L.
2 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| °dH | mg/L | ||
|---|---|---|---|
| Tiefbrunnen Kranabeth | 16.8 | 300 | very hard |
| WVA Goldeck-Koistrattl | 4.7 | 84 | moderately hard |
The figure of 191.9 mg/L CaCO₃ comes from the 2023 consumer information of the Spittal waterworks, which lists two supplies from 83.9 to 299.9 mg/L. The data is three years old. One further entry in the report could not be read reliably and is not used. Because the two supplies differ so much, ask the waterworks which one serves your street.
Angabe in °dH; Härtebereiche wie in Deutschland üblich.
Water data
| Total hardness | 10.8 °dH |
|---|---|
| Utility | Stadtgemeinde Spittal an der Drau, Wasserwerk |
How Spittal an der Drau compares
- Tap water in Spittal an der Drau is 23 % softer than the median of the 159 cities we track in Austria (14 °dH).
- By hardness it ranks 113 of 159 in Austria (1 = hardest); 29 % of these cities have softer water.
- In Kärnten it is number 3 of 4 cities; the regional median is 11.5 °dH.
- Nearest city with clearly softer water: Lienz, 56 km away (5.3 °dH).
- Nearest city with clearly harder water: Klagenfurt, 64 km away (18.5 °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 Spittal an der Drau
| Brand | Setting for this water |
|---|---|
| Bosch | H03 |
| Miele | 11 °dH |
| AEG / Electrolux | 3 |
| Beko | 3rd |
| Hoover | S2 |
| LG | H2 |
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 Spittal an der Drau water hard or soft?
It is very hard: 192 mg/L as CaCO₃ (11.2 gpg, 10.8 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Spittal an der Drau 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 Spittal an der Drau water?
11.2 gpg, equal to 10.8 °dH, 19.2 °fH or 192 mg/L calcium carbonate.
What dishwasher salt setting should I use in Spittal an der Drau?
For 192 mg/L (10.8 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Spittal an der Drau?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Stadtgemeinde Spittal an der Drau, Abnehmerinformation gemäß §6 TWV (Untersuchungsergebnisse 2023) (2023). Method: own measurement. Stadtgemeinde Spittal an der Drau, Abnehmerinformation gemäß §6 TWV (Untersuchungsergebnisse 2023) · Outdated figure? Tell us