Stock Photo - PRODUCTION - 25 July 2022, Bavaria, Pleinfeld: Julia Wittmann stows the water sample in a cool box. At the Großer Brombachsee, Julia Wittmann from the Weissenburg-Gunzenhausen District Health Office, Section 61 - Epidemic and Environmental Hygiene, takes a water sample that is then analyzed in the laboratory for various bacteria and blue-green algae, i.e. cyanobacteria. Summer vacations are almost everywhere in Germany, and the heat is driving people to the bathing lakes. Fortunately, the water quality is good almost everywhere. But how is that actually checked? (to dpa-KORR.: ""Unclouded bathing fun - Regular checks of bathing spots"") Photo: Daniel Vogl/dpa. - Pleinfeld/Bavaria/Germany