Temperature 77C - 108F Stagnation Scale and sediments Protozoa - - PowerPoint PPT Presentation

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Apr 17, 2023 142 likes •197 views

Temperature 77C - 108F Stagnation Scale and sediments Protozoa Lack of a residual disinfectant Source: Center of Disease Control Aerosolization Amplication Showerheads Temperature Cooling Towers Stagnation

SLIDE 1

Temperature 77°C - 108°F Stagnation Scale and sediments Protozoa Lack of a residual disinfectant

Source: Center of Disease Control

SLIDE 2

Supply Water Amplication

Temperature
Stagnation
Scale & Sediment
Protozoa
Biofilm
Absence of

Disinfectant

Aerosolization

Showerheads
Cooling Towers
Decorative Fountains
Whirlpool Spas

Transmission

Source: Center of Disease Control

SLIDE 3

0.4 0.41 0.45 0.74 0.7 0.75 0.91 0.86 0.99 1.08 1 1.2 1 1.4 1.5 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014

National Incidence of Legionellosis 2000-2014

Incidence (case/100,000 pop.)

Source: Center of Disease Control

SLIDE 4

10 20 30 40 50 60 Outbreaks Total Confirmed and Suspected Cases

Sources of Outbreak and Cases (%)

Potable Water Cooling Tower Hot Tub Decorative Fountain Industrial Water Unknown