Fluoride is a mineral that is found naturally in groundwater, air, food, and soil. It helps to prevent tooth decay by strengthening tooth enamel and stopping the development of cavities. Many communities in Canada that have low naturally occurring fluoride add fluoride to the municipal water supply.
Huron Perth Public Health supports the fluoridation of municipal water. Community water fluoridation is a safe, effective and equitable way to prevent and reduce tooth decay for people of all ages.
The optimal level of fluoride in the water is 0.7 milligrams per litre (mg/l) or 0.7 parts per million (ppm). This takes into consideration the fluoride that people get from other sources, like fluoridated toothpaste or mouth rinse.
In Huron and Perth counties, fluoride levels in groundwater vary. Goderich has low levels of naturally occurring fluoride in the water. The Municipality adds fluoride to the drinking water to protect teeth from decay. In some areas of Huron Perth, the naturally occurring fluoride level in the water is greater than 1.5 milligrams per litre. The water is safe to drink but may pose a risk of dental fluorosis to young children.
With the exception of dental fluorosis in young children, researchers have not found any credible link between fluoride in water and adverse health effects. If you have concerns about fluoride and your child’s dental health, please visit our Oral Health or Infant Feeding pages.