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Last Edited: 2/11/2005

Questions and Answers: Women's Reproductive Health Study, Drinking Water Contaminants and Menstrual Cycles Fact Sheet
Written: 2003


In 2003, the California Department of Health Services (CDHS), in cooperation with the U.S. Environmental Protection Agency (EPA), published a study that looked at the relationship between women's menstrual cycles and contaminants in drinking water. As part of the Women's Reproductive Health Study, researchers looked at the amount of trihalomethanes (THMs) in drinking water in relationship to characteristics of the menstrual cycle. This fact sheet was created to answer questions you might have about this study.

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