Water hardness in Wiener Neustadt
17 °dH very hard
Tap water in Wiener Neustadt is very hard: 17 °dH (304 mg/L · 17.8 gpg · 30.4 °fH).
Source: Stadt Wiener Neustadt - Wasserwerte Informationsblatt 2026 (TWV §6) (2026) · data checked 2026-10-20
Range across supply zones: 259–366 mg/L.
4 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| °dH | mg/L | ||
|---|---|---|---|
| Heideansiedlung | 17.7 | 316 | very hard |
| Ost | 16.4 | 293 | very hard |
| Süd | 14.5 | 259 | very hard |
| West | 20.5 | 366 | very hard |
The city's 2026 water information sheet, published under the drinking-water ordinance, lists four zones with a median of 304.3 mg/L CaCO₃ and a range of 258.8 to 365.9 mg/L. All four are in the very hard category. Limescale is a routine problem for kettles, dishwashers and washing machines.
Angabe in °dH; Härtebereiche wie in Deutschland üblich.
Water data
| Total hardness | 17 °dH |
|---|---|
| Utility | Stadt Wiener Neustadt - Wasserwerk |
How Wiener Neustadt compares
- Tap water in Wiener Neustadt is 22 % harder than the median of the 159 cities we track in Austria (14 °dH).
- By hardness it ranks 13 of 159 in Austria (1 = hardest); 92 % of these cities have softer water.
- In Niederösterreich it is number 10 of 46 cities; the regional median is 15.5 °dH.
- Nearest city with clearly softer water: Neudörfl, 5 km away (10.7 °dH).
- Nearest city with clearly harder water: Perchtoldsdorf, 35 km away (25.9 °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 Wiener Neustadt
| Brand | Setting for this water |
|---|---|
| Bosch | H05 |
| Miele | 17 °dH |
| AEG / Electrolux | 4 |
| Beko | 5th |
| Hoover | S3 |
| 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 Wiener Neustadt water hard or soft?
It is very hard: 304 mg/L as CaCO₃ (17.8 gpg, 17 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Wiener Neustadt 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 Wiener Neustadt water?
17.8 gpg, equal to 17 °dH, 30.4 °fH or 304 mg/L calcium carbonate.
What dishwasher salt setting should I use in Wiener Neustadt?
For 304 mg/L (17 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Wiener Neustadt?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Stadt Wiener Neustadt - Wasserwerte Informationsblatt 2026 (TWV §6) (2026). Method: figure published by the water supplier. Stadt Wiener Neustadt - Wasserwerte Informationsblatt 2026 (TWV §6) · Outdated figure? Tell us