Water hardness in Pinneberg
15.9 °dH very hard
Tap water in Pinneberg is very hard: 15.9 °dH (284 mg/L · 16.6 gpg · 28.4 °fH).
Source: Stadtwerke Südholstein - Wasserqualität Netzgebiet Pinneberg (2026) · data checked 2026-10-23
Range across supply zones: 250–318 mg/L.
2 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| °dH | mg/L | ||
|---|---|---|---|
| Wasserwerk Peinerweg (Netzgebiet Pinneberg) | 17.8 | 318 | very hard |
| Wasserwerk Quickborn Renzel (Netzgebiet Pinneberg) | 14 | 250 | very hard |
Stadtwerke Südholstein supplies the Pinneberg network from two waterworks, Quickborn Renzel and Peinerweg, which report 14.0 and 17.8 °dH. The page used here carries no date, so the year 2026 is inferred from the linked analyses. The median is 283.8 mg/L CaCO₃ within a range of 249.9 to 317.7 mg/L, so hardness depends on which works feeds your street. Neighbouring Tornesch and Uetersen are a separate network and are not included.
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water data
| Total hardness | 15.9 °dH |
|---|---|
| Utility | Stadtwerke Südholstein (Netz Pinneberg) |
How Pinneberg compares
- Tap water in Pinneberg is 38 % harder than the median of the 809 cities we track in Germany (11.5 °dH).
- By hardness it ranks 231 of 809 in Germany (1 = hardest); 71 % of these cities have softer water.
- In Schleswig-Holstein it is number 7 of 26 cities; the regional median is 12 °dH.
- Nearest city with clearly softer water: Norderstedt, 14 km away (11.6 °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 Pinneberg
| 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 Pinneberg water hard or soft?
It is very hard: 284 mg/L as CaCO₃ (16.6 gpg, 15.9 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Pinneberg 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 Pinneberg water?
16.6 gpg, equal to 15.9 °dH, 28.4 °fH or 284 mg/L calcium carbonate.
What dishwasher salt setting should I use in Pinneberg?
For 284 mg/L (15.9 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Pinneberg?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Stadtwerke Südholstein - Wasserqualität Netzgebiet Pinneberg (2026). Method: figure published by the water supplier. Stadtwerke Südholstein - Wasserqualität Netzgebiet Pinneberg · Outdated figure? Tell us