Health officers have uncovered the presence of potentially dangerous bacteria in hot water samples taken from a junction exchange station in České Budějovice. The bacteria, Legionella pneumophila, can reportedly cause pneumonia. The station provides water to local buildings on Plzeň Street. The head of the regional hygiene office overseeing South Bohemia said the threat was not high but advised residents using hot water to let water run-off for several dozen seconds after turning on the tap. České Budějovice’s heating plant has received the results of the hygiene officers’ analysis and has been told to eliminate the problem quickly.