Water hardness in Langenzersdorf
10.9 °dH very hard
Tap water in Langenzersdorf is very hard: 10.9 °dH (195 mg/L · 11.4 gpg · 19.5 °fH).
Source: Eurofins Umweltanalytik Österreich, Trinkwasser-Inspektionsbericht E2609771/02II for WVA Langenzersdorf (issued 19.10.2026) (2026-10) · data checked 2026-10-22
A Eurofins report issued on 19 October 2026 measured 194.6 mg/L CaCO₃ at the municipal office, one of four sample points in the local network. Only this sample has a hardness row, so it is not a citywide median. The municipal page says Wiener Wasser supplies the town, while the report names EVN Wasser. The measured value is unaffected by that difference.
Angabe in °dH; Härtebereiche wie in Deutschland üblich.
Water data
| Total hardness | 10.9 °dH |
|---|---|
| Utility | Gemeinde Langenzersdorf (WVA, EVN Wasser network) |
How Langenzersdorf compares
- Tap water in Langenzersdorf is 22 % softer than the median of the 159 cities we track in Austria (14 °dH).
- By hardness it ranks 112 of 159 in Austria (1 = hardest); 30 % of these cities have softer water.
- In Niederösterreich it is number 45 of 46 cities; the regional median is 15.5 °dH.
- Nearest city with clearly softer water: Mürzzuschlag, 93 km away (5.7 °dH).
- Nearest city with clearly harder water: Schwechat, 20 km away (18.8 °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 Langenzersdorf
| 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 Langenzersdorf water hard or soft?
It is very hard: 195 mg/L as CaCO₃ (11.4 gpg, 10.9 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Langenzersdorf 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 Langenzersdorf water?
11.4 gpg, equal to 10.9 °dH, 19.5 °fH or 195 mg/L calcium carbonate.
What dishwasher salt setting should I use in Langenzersdorf?
For 195 mg/L (10.9 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Langenzersdorf?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Eurofins Umweltanalytik Österreich, Trinkwasser-Inspektionsbericht E2609771/02II for WVA Langenzersdorf (issued 19.10.2026) (2026-10). Method: own measurement. Eurofins Umweltanalytik Österreich, Trinkwasser-Inspektionsbericht E2609771/02II for WVA Langenzersdorf (issued 19.10.2026) · Outdated figure? Tell us