Water hardness in Neunkirchen
11.1 °dH very hard
Tap water in Neunkirchen is very hard: 11.1 °dH (198 mg/L · 11.6 gpg · 19.8 °fH).
Source: Stadtgemeinde Neunkirchen, Wasserbefund Eurofins Prüfbericht E2609914/01L (Prüfungszeitraum 25.08.2026 bis 21.09.2026) (2026-08) · data checked 2026-10-20
Range across supply zones: 161–304 mg/L.
3 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| °dH | mg/L | ||
|---|---|---|---|
| Ortsnetz Mollram | 11.1 | 198 | very hard |
| Ortsnetz Peisching | 9 | 161 | hard |
| Ortsnetz Zentrum | 17 | 304 | very hard |
The Eurofins test report for the Neunkirchen waterworks, tested between 25 August and 21 September 2026, covers three local networks. The median is 198.1 mg/L CaCO₃ and the range is 160.7 to 303.5 mg/L. The town centre sample is the hardest of the three. Other networks in the report print no hardness row, so these figures do not cover every district.
Angabe in °dH; Härtebereiche wie in Deutschland üblich.
Water data
| Total hardness | 11.1 °dH |
|---|---|
| Utility | Stadtgemeinde Neunkirchen, Fachbereich Wasserwerk |
How Neunkirchen compares
- Tap water in Neunkirchen is 21 % softer than the median of the 159 cities we track in Austria (14 °dH).
- By hardness it ranks 111 of 159 in Austria (1 = hardest); 30 % of these cities have softer water.
- In Niederösterreich it is number 44 of 46 cities; the regional median is 15.5 °dH.
- Nearest city with clearly softer water: Mürzzuschlag, 33 km away (5.7 °dH).
- Nearest city with clearly harder water: Ternitz, 3 km away (15.2 °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 Neunkirchen
| 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 Neunkirchen water hard or soft?
It is very hard: 198 mg/L as CaCO₃ (11.6 gpg, 11.1 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Neunkirchen 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 Neunkirchen water?
11.6 gpg, equal to 11.1 °dH, 19.8 °fH or 198 mg/L calcium carbonate.
What dishwasher salt setting should I use in Neunkirchen?
For 198 mg/L (11.1 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Neunkirchen?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Stadtgemeinde Neunkirchen, Wasserbefund Eurofins Prüfbericht E2609914/01L (Prüfungszeitraum 25.08.2026 bis 21.09.2026) (2026-08). Method: own measurement. Stadtgemeinde Neunkirchen, Wasserbefund Eurofins Prüfbericht E2609914/01L (Prüfungszeitraum 25.08.2026 bis 21.09.2026) · Outdated figure? Tell us