Hörnum (Sylt) — Trinkwasserqualität

https://cities.app/de/sh/hoernum-sylt/water/drinking-water-quality

Hörnum (Sylt) — Trinkwasserqualität: dataset at cities.app/de/sh/hoernum-sylt/water/drinking-water-quality, last updated 2026-09-13. Request access through bytEM.