In the recent article by Lin, Stout and Yu (Feb 2011), they tested a number of water disinfection methods for hospitals, but did not include ozone in the tested methods. Can you tell me why? Thank you.
Ozone has been studied by our group in vitro and an in vivo plumbing model (Muraca P. Appl Environ Microbiol 1987); it was effective against Legionella. It was also installed in a Los Angeles hospital (Edelstein P. Appl Environ Microbiol 1982); evaluation was equivocal. Ozone was included in a review of disinfection methods by our group in 1988 (Muraca PW. JAWWA 1988). Ozone was also briefly discussed in our 1998 review (Lin YSE. JAWWA 1998).