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Electric and Magnetic Fields

Electric & Magnetic FieldsElectric and magnetic fields (EMFs) are found everywhere electricity is used and come from home appliances, computers, office equipment, wiring in our homes and workplaces, and electric power facilities such as substations and transmission or distribution lines.

For more than 30 years, research studies have examined questions around EMFs and health. Health agencies and a large number of reputable scientific organizations around the world have concluded that the scientific research does not demonstrate that EMFs cause or contribute to adverse health effects. Some scientific questions remain the subject of ongoing research.

The material and links on this page are provided for convenient access to sources of information about EMFs. Other sources of information are available. By providing these links, Hydro One Inc. is not necessarily endorsing any organization or the content of their material.


Scientific Reviews and Additional Information 

Health Canada

 World Health Organization

Hospital for Sick Children

National Cancer Institute at the National Institutes of Health

US National Institute of Environmental Health Sciences

Canadian Electricity Association


Expert Advice

Your Health  

  • Contact Health Canada (Consumer and Clinical Radiation Protection Bureau) at ccrpb-pcrpcc@hc-sc.gc.ca.
  • Contact Ontario Ministry of Health and Long-Term Care, Public Health Division, 416-212-3831.
  • Contact Local Public Health Unit or 1-866-532-3161.

Your Work

  • Contact Ministry of Labour, 416-235-5922

Your Home

  • Contact Local Municipal Planning Department
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