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Electric and Magnetic Fields


Electric and magnetic fields (EMFs) are invisible lines of force that surround any electrical device, such as power lines or the electrical cables in your home. They are created whenever electricity flows through a wire.


Electric and magnetic fields are present everywhere electricity is used -- around appliances, televisions and power distribution facilities. These fields are a normal part of both the delivery of electricity across a power system and the use of electricity in our homes.

At this time research results from reputable organizations, such as the International Commission on Non-Ionizing Radiation Protection (ICNIRP) and The World Health Organization (WHO) concludes "current evidence does not confirm the existence of any health consequences from exposure to EMFs." In Canada, there are no guidelines or standards on acceptable levels of residential EMF exposure. Health Canada's "It's Your Health" fact sheet on EMF states, "At this time, Health Canada does not consider guidelines [on EMF exposure levels] necessary because scientific evidence is not strong enough to conclude that typical exposures cause health problems." Health Canada goes on to state, "You do not need to take action regarding typical daily exposures to electric and magnetic fields at extremely low frequencies." (Health Canada, April 2004).

Toronto Hydro is committed to providing safe, reliable and environmentally sound electric service to its customers, and a safe working environment for its employees. For this reason, Toronto Hydro complies with the guidelines set by the ICNIRP.

Because electricity has become a virtual necessity in our lives, Toronto Hydro will continue to act responsibly by committing to:

  • Provide EMF safe guideline information and EMF literature to its employees and its customers;
  • Continue to support the need for additional research through our membership in the Electrical Distributors Association and the Canadian Electrical Association.