Fluoride is oftentimes added to communities’ water supply to help residents ward off cavities, but a new report found that too much fluoride could be dangerous for kids’ health.1

An August report by the National Toxicology Program (NTP) at the Department of Health and Human Services (HHS) found that lower IQ in kids has been linked to drinking water with fluoride levels two times higher than what the HHS deems safe.2

An estimated 1.9 million Americans are living in communities with water fluoride levels at or above 1.5 milligrams per liter (mg/L).3 The HHS Public Health Service recommends that communities’ water supply have no more than 0.7 mg/L of fluoride.2