A recent CDC study of the presence of legionella in our nation’s cooling has produced concerning results. Water from 190+ cooling towers from around the country was collected and tested for the presence of legionella bacteria. The CDC found that 84% of those water samples contained at least DNA traces of legionella bacteria. The study also found that 79 of the 196 (~40%) surveyed cooling towers contained live legionella bacteria. These findings were enough for the study’s head researcher, Dr. Anna Llewellyn, to refer to legionella as being “ubiquitous in U.S. cooling towers”. Cooling towers have been strongly associated with outbreaks of Legionnaires’…