We have approximately 85,000 streetlights in our 131-square-mile service area that provide lighting on residential and arterial streets. There are also about 20,000 metal streetlight poles and about 17,000 pieces of related metal equipment, such as handhole covers located on the ground near the poles.
Contact voltage can occur on the surface of metal streetlight structures, street signs, or other fixtures that can become energized. It may pose a risk for shock. If streetlight equipment becomes energized, people and their pets risk being shocked if contact is made. To keep our equipment safe, we test all our streetlights for contact voltage annually. In 2025, our contractor, Osmose Utility Services, will test our equipment starting in September. They expect to finish testing by the end of the year.
Aging infrastructure, weather, improper installation, and exposed wires from rodents chewing on cables, copper wire theft, and corrosion all pose risks for contact voltage. To address these factors, we drafted a 10-year plan that indicates where strategic investments should be made to ensure our customers and equipment are safe.
The best way to avoid contact voltage is to exercise caution while walking. Most cases of contact voltage occur during wet winter months and when streetlights are on for longer hours.
Tips on avoiding possible contact voltage
- When walking your pet, be aware if your pet acts strangely around any potentially energized metal equipment.
- Avoid contact with metal equipment that could be energized.
- Don't tie your pet's leash to a streetlight or near metal plates on the ground, known as "handholes."
- Report any streetlights that remain on during the day, or that flicker during the evening. This could indicate a problem.
- Always immediately report any situation you are concerned about to us by calling (206) 684-7056. After normal business hours, call (206) 684-7400.
Streetlights are an important part of a safe community. We are committed to maintaining a safe streetlight system. If you have any questions or concerns about a streetlight, contact us immediately at the phone numbers listed above or at street.light@seattle.gov.