Water hardness in Wittlich
16.2 °dH very hard
Tap water in Wittlich is very hard: 16.2 °dH (289 mg/L · 16.9 gpg · 28.9 °fH).
Source: Stadtwerke Wittlich: Prüfbericht Trinkwasseranalyse Versorgungsbereich Stadtmitte (AGROLAB Analysennr. 668818) (2025-06) · data checked 2026-11-03
Stadtwerke Wittlich publishes an AGROLAB lab report for the Stadtmitte supply area, dated June 2025, which gives 289.2 mg/L CaCO₃. That is very hard water, and the figure applies to the town centre supply, not necessarily to every outlying district. Expect scale on kettles and heating elements, and check the utility's report for your own area before sizing a softener.
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water data
| Total hardness | 16.2 °dH |
|---|---|
| Utility | Stadtwerke Wittlich |
How Wittlich compares
- Tap water in Wittlich is 41 % harder than the median of the 809 cities we track in Germany (11.5 °dH).
- By hardness it ranks 215 of 809 in Germany (1 = hardest); 73 % of these cities have softer water.
- In Rheinland-Pfalz it is number 4 of 25 cities; the regional median is 9.9 °dH.
- Nearest city with clearly softer water: Schweich, 18 km away (9.8 °dH).
- Nearest city with clearly harder water: Bitburg, 26 km away (22.5 °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 Wittlich
| Brand | Setting for this water |
|---|---|
| Bosch | H04 |
| Miele | 16 °dH |
| AEG / Electrolux | 4 |
| Beko | 5th |
| Hoover | S2 |
| 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 Wittlich water hard or soft?
It is very hard: 289 mg/L as CaCO₃ (16.9 gpg, 16.2 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Wittlich 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 Wittlich water?
16.9 gpg, equal to 16.2 °dH, 28.9 °fH or 289 mg/L calcium carbonate.
What dishwasher salt setting should I use in Wittlich?
For 289 mg/L (16.2 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Wittlich?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Stadtwerke Wittlich: Prüfbericht Trinkwasseranalyse Versorgungsbereich Stadtmitte (AGROLAB Analysennr. 668818) (2025-06). Method: own measurement. Stadtwerke Wittlich: Prüfbericht Trinkwasseranalyse Versorgungsbereich Stadtmitte (AGROLAB Analysennr. 668818) · Outdated figure? Tell us