As approved by Slog this morning, Portland elected officials today moved to fluoridate their city's water—two years from now. Also, the fluoridation implementation could be quickly reversed by Portland voters:

The ordinance approved Wednesday morning calls for the city water to be fluoridated by March 2014... Opponents of public fluoridation say it's unsafe and violates an individual's right to consent to medication. They also add that council members rushed into action without a public vote, and they plan to collect signatures to force a referendum in May 2014.

Huge trove of Slog wisdom on the subject here.