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Environmental and Workplace Health

Description - Figure F3 - Burden of illness for drinking water with conventional filtration without disinfection

A bar graph showing the burden of illness in DALYs per person per year from consumption of river water treated using conventional filtration without disinfection. The burden of illness is shown for each of 5 pathogens (Cryptosporidium, Giardia, rotavirus, Campylobacter, E. coli O157:H7) and for the total burden of illness from these pathogens combined. The x-axis of the graph is labelled with the 5 pathogens and the pathogen total. The y-axis of the graph is the annual DALY risk in DALYs per person per year. It is presented on a logarithmic scale and the axis values range from 10-15 to 1. The reference level of risk of 10-6 DALYs per person per year is illustrated on the graph as a dotted horizontal line. The vertical bars extend approximately to: 10-10 for Cryptosporidium; 10-9 for Giardia; 10-6 for rotavirus; 10-2 for Campylobacter, 10-2 for E. coli O157:H7; and for the total of these pathogens combined, slightly less than 10-1 DALYs per person per year.