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Public Health · single question

The current U.S. recommended optimal concentration of fluoride in community drinking water is:

  1. 0.5 ppm
  2. 0.7 ppm
  3. 1.0 ppm
  4. 1.2 ppm
Show answer and explanation

Correct answer: B. 0.7 ppm

  • A. Below the current recommendation.
  • B. Correct. The recommended optimal level is 0.7 mg/L (0.7 ppm).
  • C. The older range topped out near 1.2; current single recommendation is 0.7.
  • D. Above the current recommendation.

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