The U.S. Surgeon General,[35] the American Public Health Association,[36] the Royal Commission on the National Health Service,[37] Australian Medical Association,[38] New Zealand Medical Association,[39] Health Canada supports fluoridation, citing a number of international scientific reviews that indicate "there is no link between any adverse health effects and exposure to fluoride in drinking water at levels that are below the maximum acceptable concentration of 1.5 mg/L."[40] The Centers for Disease Control and Prevention listed water fluoridation as one of the ten great public health achievements of the 20th century in the U.S.,[41] along with vaccination, family planning, recognition of the dangers of smoking, and other achievements.[41]