Electric and Magnetic Fields (EMFs)

In recent years, concerns have been raised about a possible link between exposure to electric and magnetic fields (EMF) and adverse health conditions. 

Thousands of studies on this subject have been done throughout the world, with results that are often hard to interpret and sometimes conflicting.  A number of internationally recognized scientific organizations and independent regulatory advisory groups have conducted scientific reviews of the EMF research literature.

Without exception, these major reviews have reported that the body of data, as large as it is, does not demonstrate that exposure to power-frequency magnetic fields causes cancer or other health risks, although the possibility cannot be dismissed. Most reviews recommend further research, and, appropriately, research is ongoing worldwide.

While no one has proven that exposure to EMFs is harmful, many questions remain about how these fields, especially magnetic fields, might affect the human body.

What is SDG&E doing?

SDG&E is committed to providing safe, reliable and environmentally sound gas and electric service to its customers.  We recognize and share the concerns of our customers and employees over the possibility that electric and/or magnetic fields might adversely affect health.

Until research and the scientific community provide greater direction, SDG&E’s commitment includes the following measures:

  • Maintain an EMF Center staffed with informed representatives available to talk with customers about EMF issues
  • Provide free magnetic field measurements on request.
  • Provide objective EMF health literature to the public.
  • Support, fund and monitor EMF research and participate in discussion forums and regulatory proceedings to remain current on all EMF-related issues.
  • Implement low-cost and no-cost measures, where appropriate, to reduce fields associated with new and upgraded construction projects, in accordance with the rules of the California Public Utilities Commission.

Request a Brochure or On-site EMF Measurement

You can request an EMF brochure or on-site EMF measurement.

  • Online request
  • Call our toll-free number at 1-800-411-7343.
  • Si desea recibir información en español, comuniquese son SDG&E al 1-800-311-7343.

Additional Information

  • Electric fields are invisible lines of force created by voltage (The electric force that causes current in a conductor) and are shielded by most materials.
    • Typical measurements are in volts per meter (V/m).
  • Magnetic fields are invisible lines of force created by current (The movement of electrons in a conductor) and are not shielded by most materials.
    • Typical measurements are in milligauss (mG) or microtesla (µT).

The basics of EMF

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Last updated: January 26, 2009