0.7 mg/L now the optimal concentration to provide the best balance of protection from caries while limiting the risk of dental fluorosis

New Water Fluoridation Guidelines:

Greater Access to Fluoride Along with Increased Incidence of Fluorosis Spurred the US Public Health Service Recommendation

Americans have more access to fluoride today.  More than 90% of children and adolescents ages 5-19 and 70% of those 2-4 use fluoridated toothpaste.  Other sources include mouth rinses, dietary fluoride supplements, and professionally applied fluoride treatments.

Implementation will lead to a reduction of approximately 25% in fluoride from drinking water alone and a 14% overall reduction in total fluoride intake.  This is important because data shows that the prevalence of dental fluorosis has increased since the  1980's.  Importantly, evidence shows that 0.7 mg/L is sufficient to achieve caries protective benefits while helping minimize the risk of dental fluorosis.Community water fluoridation remains of the most cost-effective means for delivering fluoride and preventing decay.  More than 100 national and international healthcare organizations  recognize the benefits of community water fluoridation. 

Click here to read the full Public Health Service 2015 Fluoride Guidelines