Fig. 1From: Applying a cumulative risk framework to drinking water assessment: a commentarya. Distribution of cumulative lifetime cancer risks for California public water systems. Y axis: cumulative cancer risk for each water system; X axis: water utilities plotted according to the size of population served. b and c. Contribution to the lifetime cancer risk by individual contaminants or contaminant groups. DBPs refer to nine carcinogenic disinfection byproducts listed in Additional file 1: Table S1. b: Public water systems with cumulative lifetime cancer risk greater than 10−3. c: Public water systems with cumulative lifetime cancer risk between 10− 4 and 10− 3Back to article page