Water hardness in Hollabrunn
24.6 °dH very hard
Tap water in Hollabrunn is very hard: 24.6 °dH (439 mg/L · 25.6 gpg · 43.9 °fH).
Source: Stadtgemeinde Hollabrunn stw - Wichtigste Parameter Trinkwasser 2023 (AGES) (2023-06) · data checked 2026-10-20
Range across supply zones: 384–669 mg/L.
This figure is stale. It comes from a 2023 AGES table for the city's eight pumping stations, sampled on 14 June 2023, and we found no newer edition. The median is 439.1 mg/L CaCO₃, with a range from 383.8 to 669.4 mg/L, the top value being one Steinfeld station. Purchased EVN water serving some outlying villages is not included. Ask the Stadtwerke for a current value.
Angabe in °dH; Härtebereiche wie in Deutschland üblich.
Water data
| Total hardness | 24.6 °dH |
|---|---|
| pumping_station_gesamthaerte_dH | [object Object] |
| Utility | Stadtgemeinde Hollabrunn, Wasserwerke (stw) |
How Hollabrunn compares
- Tap water in Hollabrunn is 76 % harder than the median of the 159 cities we track in Austria (14 °dH).
- By hardness it ranks 2 of 159 in Austria (1 = hardest); 99 % of these cities have softer water.
- In Niederösterreich it is number 2 of 46 cities; the regional median is 15.5 °dH.
- Nearest city with clearly softer water: Tulln an der Donau, 25 km away (9.2 °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 Hollabrunn
| Brand | Setting for this water |
|---|---|
| Bosch | H06 |
| Miele | 25 °dH |
| AEG / Electrolux | 6 |
| Beko | 6th |
| Hoover | S3 |
| LG | H4 |
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 Hollabrunn water hard or soft?
It is very hard: 439 mg/L as CaCO₃ (25.6 gpg, 24.6 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Hollabrunn 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 Hollabrunn water?
25.6 gpg, equal to 24.6 °dH, 43.9 °fH or 439 mg/L calcium carbonate.
What dishwasher salt setting should I use in Hollabrunn?
For 439 mg/L (24.6 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Hollabrunn?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Stadtgemeinde Hollabrunn stw - Wichtigste Parameter Trinkwasser 2023 (AGES) (2023-06). Method: older figure, source currently unavailable. Stadtgemeinde Hollabrunn stw - Wichtigste Parameter Trinkwasser 2023 (AGES) · Outdated figure? Tell us