Water hardness in Cadolzburg
18 °dH very hard
Tap water in Cadolzburg is very hard: 18 °dH (321 mg/L · 18.8 gpg · 32.1 °fH).
Source: Gemeindewerke Cadolzburg, Trinkwasseranalyse 2024 (2024) · data checked 2026-11-03
Range across supply zones: 309–334 mg/L.
2 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| °dH | mg/L | ||
|---|---|---|---|
| Hochzone | 18.7 | 334 | very hard |
| Niederzone | 17.3 | 309 | very hard |
Gemeindewerke Cadolzburg reports two supply zones in its 2024 analysis: 17.3 °dH in the lower zone (Niederzone) and 18.7 °dH in the upper zone (Hochzone). Which one applies depends on the street, and the utility lists the upper-zone streets in the same document.
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water data
| Total hardness | 18 °dH |
|---|---|
| Utility | Gemeindewerke Cadolzburg (Markt Cadolzburg) |
How Cadolzburg compares
- Tap water in Cadolzburg is 57 % harder than the median of the 809 cities we track in Germany (11.5 °dH).
- By hardness it ranks 148 of 809 in Germany (1 = hardest); 81 % of these cities have softer water.
- In Bayern it is number 46 of 137 cities; the regional median is 15.8 °dH.
- Nearest city with clearly softer water: Baiersdorf, 16 km away (11.7 °dH).
- Nearest city with clearly harder water: Schlüsselfeld, 39 km away (25.6 °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 Cadolzburg
| Brand | Setting for this water |
|---|---|
| Bosch | H05 |
| Miele | 18 °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 Cadolzburg water hard or soft?
It is very hard: 321 mg/L as CaCO₃ (18.8 gpg, 18 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Cadolzburg 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 Cadolzburg water?
18.8 gpg, equal to 18 °dH, 32.1 °fH or 321 mg/L calcium carbonate.
What dishwasher salt setting should I use in Cadolzburg?
For 321 mg/L (18 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Cadolzburg?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Gemeindewerke Cadolzburg, Trinkwasseranalyse 2024 (2024). Method: own measurement. Gemeindewerke Cadolzburg, Trinkwasseranalyse 2024 · Outdated figure? Tell us