AdvertisementLethal Pneumonia Outbreak Caused By Low Chlorine In Flint WaterFebruary 05, 2018Rebecca HersherfacebookEmailScientists say low chlorine levels in Flint's water system during the city's water crisis in 2014 and 2015 led the bacterium Legionella pneumophila to proliferate, causing a deadly outbreak of Legionnaire's disease. (Science Source)