Water hardness in Denkendorf
9.3 °dH hard
Tap water in Denkendorf is hard: 9.3 °dH (166 mg/L · 9.7 gpg · 16.6 °fH).
Source: Gemeinde Denkendorf - Prüfbericht 185534/02/02, Probenahme 14.04.2026 (report 20.05.2026) (2026-04) · data checked 2026-11-03
The stored value of 9.3 °dH (166.0 mg/L CaCO₃) is calculated from calcium and magnesium in one sample taken on 14.04.2026 at the Kiga Albrecht-Bengelstr. in Denkendorf. The report names the Zweckverband Landeswasserversorgung network. Denkendorf has a second supply zone (Unterdorf) for which we found no usable report, so this is one measuring point, not the whole town.
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water data
| Total hardness | 9.3 °dH |
|---|---|
| Utility | Gemeinde Denkendorf (Trinkwasser) |
How Denkendorf compares
- Tap water in Denkendorf is 19 % softer than the median of the 809 cities we track in Germany (11.5 °dH).
- By hardness it ranks 506 of 809 in Germany (1 = hardest); 37 % of these cities have softer water.
- Nearest city with clearly softer water: Neubulach, 47 km away (3.5 °dH).
- Nearest city with clearly harder water: Wendlingen am Neckar, 4 km away (17 °dH).
Ranking of the hardest and softest water in Germany →
What it means at home
- Fast scale on taps, shower screens and kettle; white spots on glassware.
- Water heater: efficiency loss and element failures within years if unprotected.
- Dry skin and dull hair after showering are common.
- Softener recommended; jug or reverse osmosis for drinking.
How much salt will you use for softening?
Recommended, especially with a heater or boiler: scale cuts efficiency and shortens its life.
Descale a coffee machine or kettle about every 2 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Denkendorf
| Brand | Setting for this water |
|---|---|
| Bosch | H02 |
| Miele | 9 °dH |
| AEG / Electrolux | 2 |
| Beko | 3rd |
| Hoover | S1 |
| 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 Denkendorf water hard or soft?
It is hard: 166 mg/L as CaCO₃ (9.7 gpg, 9.3 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Denkendorf 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 Denkendorf water?
9.7 gpg, equal to 9.3 °dH, 16.6 °fH or 166 mg/L calcium carbonate.
What dishwasher salt setting should I use in Denkendorf?
For 166 mg/L (9.3 °dH) check your manufacturer's table: level 4–5.
Do I need a water softener in Denkendorf?
Recommended if you have a water heater, boiler or tankless unit: it saves repairs and detergent.
Source
Source: Gemeinde Denkendorf - Prüfbericht 185534/02/02, Probenahme 14.04.2026 (report 20.05.2026) (2026-04). Method: figure published by the water supplier. Gemeinde Denkendorf - Prüfbericht 185534/02/02, Probenahme 14.04.2026 (report 20.05.2026) · Outdated figure? Tell us