Overview

• Authorities have imposed bathing bans at two Altmühlsee sites—Schlungenhof and Muhr am See—with a warning at Seezentrum Wald after toxin-producing algae surged.
• Ebertshausener See remains closed to swimmers and dogs following microbiological tests that found massive Microcystis concentrations and low visibility.
• Weitmannsee continues to be off-limits due to elevated fecal bacteria levels that pose gastrointestinal and infection risks.
• Health offices carry out EU-mandated monthly water assessments and weekly algae checks to issue timely warnings and lift bans when safe.
• The Bavarian Environment Ministry reports that despite isolated closures, overall water quality in most larger bathing lakes this season remains excellent.