Residents in several Lambton County communities are being advised of a temporary pause in water fluoridation due to ongoing maintenance.
The Lambton Area Water Supply System says work on its fluoridation system has been underway since January 20, 2026. The system is waiting on a replacement part before fluoride levels can return to normal. Officials stress that the drinking water remains safe and there are no immediate health risks. However, fluoride levels are currently below the recommended range that helps prevent tooth decay.
The system supplies water to Sarnia, Point Edward, St. Clair, Lambton Shores, Plympton-Wyoming, Warwick, and Brooke-Alvinston, meaning residents in those areas may not be receiving the usual fluoride levels in their water. Lambton Public Health says it is monitoring the situation and will update the public once fluoride levels return to normal.
In the meantime, residents are encouraged to continue brushing with fluoridated toothpaste to protect their dental health. Those at higher risk of tooth decay may wish to speak with a dental professional about additional options. Public health officials also note that some residents may qualify for free dental programs and can contact Lambton Public Health for more information.
Written by: K. Milhomens
