A new report from the US Centers for Disease Control and Prevention (CDC) details progress toward its Healthy People 2010 goal of delivering optimally fluoridated water to 75 percent of the US population.

In 2006, that goal (defined as 0.7–1.2 mg/L) had been achieved for 69.6 percent of the population, an increase from 62.1 percent in 1992 and from 65 percent in 2000. By 2006, about half the states had reached the 75 percent target.

Some states are still drastically behind the curve on fluoridated public water.