Water hardness in Mürzzuschlag
5.7 °dH moderately hard
Tap water in Mürzzuschlag is moderately hard: 5.7 °dH (101 mg/L · 5.9 gpg · 10.1 °fH).
Source: Stadtgemeinde Mürzzuschlag, Trinkwasseruntersuchung LKH Zone Nord I (Prüfbericht 240562-01, Wasserlabor Holding Graz) (2024-03) · data checked 2026-11-05
Range across supply zones: 46–155 mg/L.
2 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| °dH | mg/L | ||
|---|---|---|---|
| Netz Nord I (LKH Mürzzuschlag, MZZP3) | 8.7 | 155 | hard |
| Netz Süd II (Bezirkspensionistenheim, MZZP2) | 2.6 | 46 | soft |
For Mürzzuschlag we rely on a drinking-water analysis from the Zone Nord I area (March 2024), attributed to the town's waterworks. The median is 100.9 mg/L CaCO₃, about 5.7 °dH, with two results between 46.4 and 155.3 mg/L (roughly 2.6 to 8.7 °dH). This is moderately hard water with clear differences between zones, so the value at your address may differ.
Angabe in °dH; Härtebereiche wie in Deutschland üblich.
Water data
| Total hardness | 5.7 °dH |
|---|---|
| Utility | Stadtgemeinde Mürzzuschlag, Wasserwerk |
How Mürzzuschlag compares
- Tap water in Mürzzuschlag is 60 % softer than the median of the 159 cities we track in Austria (14 °dH).
- By hardness it ranks 156 of 159 in Austria (1 = hardest); 2 % of these cities have softer water.
- In Steiermark it is number 8 of 8 cities; the regional median is 13.6 °dH.
- Nearest city with clearly softer water: Riedlingsdorf, 45 km away (4.4 °dH).
- Nearest city with clearly harder water: Ternitz, 30 km away (15.2 °dH).
Ranking of the hardest and softest water in Austria →
What it means at home
- Visible kettle scale every few weeks; vinegar or citric acid is enough.
- Water heater and washing machine: some long-term scale; a scale inhibitor slows it.
- Dishwasher: medium salt setting.
- Softener optional; pays off mainly with a gas boiler or tankless heater.
How much salt will you use for softening?
Optional. A scale inhibitor or a small softener protects the heater; soap savings are modest.
Descale a coffee machine or kettle about every 3 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Mürzzuschlag
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 6 °dH |
| AEG / Electrolux | 2 |
| Beko | 2nd |
| Hoover | S1 |
| LG | H1 |
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 Mürzzuschlag water hard or soft?
It is moderately hard: 101 mg/L as CaCO₃ (5.9 gpg, 5.7 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Mürzzuschlag 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 Mürzzuschlag water?
5.9 gpg, equal to 5.7 °dH, 10.1 °fH or 101 mg/L calcium carbonate.
What dishwasher salt setting should I use in Mürzzuschlag?
For 101 mg/L (5.7 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Mürzzuschlag?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: Stadtgemeinde Mürzzuschlag, Trinkwasseruntersuchung LKH Zone Nord I (Prüfbericht 240562-01, Wasserlabor Holding Graz) (2024-03). Method: figure published by the water supplier. Stadtgemeinde Mürzzuschlag, Trinkwasseruntersuchung LKH Zone Nord I (Prüfbericht 240562-01, Wasserlabor Holding Graz) · Outdated figure? Tell us