Evaluation of the efficacy of ultraviolet irradiation for disinfection of hospital water contaminated byLegionella

Ultraviolet irradiation: An effective inactivation method of Aspergillus spp. in water for the control of waterborne nosocomial aspergillosis

“…Potable water distribution systems are an important source for colonization of microorganisms related to water-borne w a t e r r e s e a r c h 4 6 ( 2 0 1 2 ) 5 9 3 5 e5 9 4 0 nosocomial infections (Franzin et al, 2002;Lin et al, 2011).…”

Clinical and environmental distribution of Legionella pneumophila in a university hospital in Italy: efficacy of ultraviolet disinfection

“…Several reports have shown that UV irradiation is an alternative method for disinfection of water systems, and is more effective than chlorination, heating or other methods of ionization. 16,17 The technical characteristics of the UV system adopted in this study, i.e. the elevated flow of water (25 m 3 /h) into the circuit and the use of Teflon pipes that tolerate high pressure and are well penetrated by UV light, may have been important in inhibiting the formation of sediments and biofilms.…”

“…1,14,15 Various disinfection methods have been used to eradicate legionella from hospital water systems, including hyperchlorination, thermal disinfection and ultraviolet (UV) irradiation. 16,17 The objectives of the present study were: (1) to investigate the circulation of legionella in different wards of the 'V. Monaldi' University Hospital; (2) to analyse the molecular epidemiology of clinical and environmental legionella isolates; and (3) to validate the efficacy of a disinfection method for eradication of legionella from the hospital water system.…”

Water disinfection with ozone, copper and silver ions, and temperature increase to control Legionella: seven years of experience in a university teaching hospital

“…Alternative disinfection methods have been suggested to control legionella in water, 1 such as ozone, [2][3][4] copper and silver ionization, [5][6][7][8][9] monochloramide, 10 ultraviolet light 11 and high chloride levels. 3,11 In 1993, the Swiss Government recommended reducing the hot water temperature in all public buildings below 50 8C to save energy. To control legionella at the lower temperature, our hospital introduced two water disinfection procedures against Legionella spp.…”