Question

MPLE 2 Risk Assessment for Chloroform in Drinking Water
Trinking water is disinfected with chlorine, an undesired byproduct, cho
Cam (CHCl3), may be formed. Suppose a 70-kg person drinks 2 L of water
boy for 70 years with a chloroform concentration of 0.10 mg/L (the drink
ing water standard).
Find the upper-bound cancer risk for this individual.
If a city with 500,000 people in it also drinks the same amount of this water,
how many extra cancers per year would be expected? Assume the standard
70-year lifetime.
Compare the extra cancers per year caused by chloroform in the drinking
water with the expected number of cancer deaths from all causes. The
cancer death rate in the United States is 189 per 100,000 per year.​

Answer 1

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