The Government of Ontario publishes guidelines for schools, private schools and child care centres to flush plumbing and test drinking water for lead. For more information, please refer to the MECP website at https://www.ontario.ca/page/flushing-and-sampling-lead.

Each fixture, where water is assumed to be taken for consumption, is tested twice:

  • “Standing” sample – taken after the water has not been in use or remained dormant in the waterlines for a period not less than six hours.
  • “Flushed” sample – taken after the water has been run for five minutes. Flushed samples are representative of water quality during a school day.