Boil water advisory in effect in Sudbury area after “adverse” samples detected

SUDBURY — A boil water advisory is in place in Sudbury, Ont. and surrounding areas after public health officials say “adverse” samples were detected in the public water supply.

Public Health Sudbury & Districts is warning all residents in Sudbury, New Sudbury and Falconbridge to bring tap water to a roiling boil for at least a minute before consuming, or use bottled water.

The agency’s manager, Burgess Hawkins, says the cause of the contamination is being investigated and the boil water advisory is in place as a precaution.

Hawkins says officials don’t believe anyone who has consumed water from the municipal system will experience negative health effects.

The public health agency says officials are taking additional water samples from the David Street Water Treatment Plant and Falconbridge Water Treatment Plant and the current advisory will remain in place until tests confirm the water supply is safe.

Officials say the following Sudbury-area communities are unaffected and not subject to the boil water advisory: Copper Cliff, Coniston, Walden, Garson, Val Caron and area, Azilda, Chelmsford, Dowling, Skead, and Onaping.

This report by The Canadian Press was first published May 7, 2026.

The Canadian Press