Overview
- A new statewide assessment found 96% of Bavaria’s 375 EU‑designated bathing sites rated 'good' or 'excellent' based on microbiological testing.
- The Landesamt für Gesundheit und Lebensmittelsicherheit has analysed 750 water samples since late April and health offices collect six samples per site each season to test for Escherichia coli and intestinal enterococci.
- Riemer See‑North in Munich is the only site graded 'mangelhaft' because the EU‑style classification uses a retrospective three‑year statistical method that counts isolated poor samples from 2023–2024.
- Munich officials say 2025 and early‑2026 samples were unremarkable, no bathing ban is in place, and the city has used measures since summer 2024 — more frequent mowing, crow‑proof bins, stricter feeding rules, daily cleaning and plans for three extra sampling points this season — to reduce bird‑related contamination.
- Authorities note typical contamination drivers such as heavy rain and waterfowl and warn that cyanobacterial blooms are tested for when suspected and may become more frequent with warming, while ten Bavarian sites remain unclassified pending enough samples.