STONEWALL, TX – This week, the Lyndon B. Johnson National Historical Park received results of environmental water tests that were positive for Legionella bacteria at three sites: the pool house, the Klein shop, and the hangar visitor center. While there have been no confirmed cases of illness associated with this at the park, Legionella can cause a severe pneumonia (called Legionnaires’ disease) when people breathe in aerosolized droplets of water that contain the bacteria.
Park staff with expertise in water operations are working with National Park Service Office of Public Health (OPH), and in consultation with the Centers for Disease Control and Prevention (CDC), to take immediate steps to address this finding. An environmental assessment of the entire water system is already underway. We know that Legionella bacteria exist in the environment, and the OPH considers the risk of Legionnaires’ disease in the park to be low.