In your June issue, plumbing contractor Dave Yates makes a comment I find very hard to believe (Q&A, 6/06). He states, "Estimates of the number of deaths from potable hot-water system bacterial infections range widely, but 10,000 per year is the middle ground."

The article does not state whether 10,000 per year is an estimate for the United States or for the entire world, but either way, this number seems unbelievably high to me. Please elaborate if you have any more information on the subject.

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