Study: Tap water poses little pregnancy risk - Reuters

Chemical byproducts linked to miscarriages, but threat is small

NEW YORK - Although some studies have suggested that certain chemical byproducts in tap water raise a woman’s risk of miscarriage, new research suggests that the threat is small, if it exists at all.

The chemicals in question are byproducts of the chlorination process used to kill disease-causing pathogens in the drinking-water supply. Some of these byproducts, including a group of chemicals called trihalomethanes, have been shown to cause cancer and reproductive problems in lab animals exposed to high doses.

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