Water hardness in Petershausen
13 °dH very hard
Tap water in Petershausen is very hard: 13 °dH (232 mg/L · 13.6 gpg · 23.2 °fH).
Source: Gemeinde Petershausen, Eigenbetrieb Wasser/Abwasser: Trinkwasseranalyse (Probe 26-086974-01; ALS report CMU26-007319-1) (2026-06) · data checked 2026-11-06
A drinking water analysis from June 2026 gives Petershausen 232.1 mg/L (13.0 °dH). It rests on one tap sample, so it does not represent every point in the network. The value sits just below the 14 °dH threshold for the "hard" band. Anyone who needs to know what reaches their own home can ask the municipal water utility (Eigenbetrieb Wasser/Abwasser).
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water data
| Total hardness | 13 °dH |
|---|
How Petershausen compares
- Tap water in Petershausen is 13 % harder than the median of the 809 cities we track in Germany (11.5 °dH).
- By hardness it ranks 335 of 809 in Germany (1 = hardest); 58 % of these cities have softer water.
- In Bayern it is number 88 of 137 cities; the regional median is 15.8 °dH.
- Nearest city with clearly softer water: Karlsfeld, 20 km away (2.6 °dH).
- Nearest city with clearly harder water: Wolnzach, 10 km away (18.6 °dH).
Ranking of the hardest and softest water in Germany →
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 Petershausen
| Brand | Setting for this water |
|---|---|
| Bosch | H04 |
| Miele | 13 °dH |
| AEG / Electrolux | 3 |
| Beko | 4th |
| 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 Petershausen water hard or soft?
It is very hard: 232 mg/L as CaCO₃ (13.6 gpg, 13 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Petershausen safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
How many grains per gallon is Petershausen water?
13.6 gpg, equal to 13 °dH, 23.2 °fH or 232 mg/L calcium carbonate.
What dishwasher salt setting should I use in Petershausen?
For 232 mg/L (13 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Petershausen?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Gemeinde Petershausen, Eigenbetrieb Wasser/Abwasser: Trinkwasseranalyse (Probe 26-086974-01; ALS report CMU26-007319-1) (2026-06). Method: figure published by the water supplier. Gemeinde Petershausen, Eigenbetrieb Wasser/Abwasser: Trinkwasseranalyse (Probe 26-086974-01; ALS report CMU26-007319-1) · Outdated figure? Tell us