Are you sure you quoted Mark J. Nieuwenhuijsen accurately in this article? To wit: “. . . he was surprised to find that [the factors most influencing trihalomethane production in pools] include water temperature, large numbers of swimmers, and high concentrations of organic compounds.” Elevated temperature generally accelerates chemical reactions. More swimmers mean more grunge. And high concentrations of organic compounds–well, what’s to find?
Mark E. Kahn Darnestown, Md.
Log in
Subscribers, enter your e-mail address for full access to the Science News archives and digital editions.