The Nation : Fluoride Limits Doubled

The Environmental Protection Agency almost doubled the recommended limit of decay-retarding fluoride in drinking water, in a move that means the handful of communities with a naturally high level of fluoride in their water will not have to reduce it. The action reversed a decade-old finding that mottled teeth, a consequence of high fluoride levels, is an “adverse health effect.” However, the Natural Resources Defense Council challenged the action, saying it sets a precedent for tolerating naturally high levels of barium and arsenic in drinking water.