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Utilities & Trees

Avoid power lines when planting
Trees and utilities can coexist when planned properly.

Underground utilities

Trees should be planted 10 feet from sewer, water and gas lines. You can locate the side sewer serving your property here. To locate all underground utlities, contact Call Before You Dig by dialing 811 at least two days before digging.

Not only is it within your best interest to contact 811 before you plant a tree, it's the law. Visibly mark your proposed planting location in white before the utility companies arrive. Utility companies will mark the location of your water, electric, communications, and gas lines.

Additionally, you should also know where your side sewer line is located before digging. You can find a map of your property and the location of the side sewer line here.


Overhead Power lines

City Light employees and contractor crews work to maintain safe and reliable electric service by clearing branches, limbs and fallen trees away from power lines. Seattle City Light customers are expected to keep the line drop from pole to home or other buildings clear of trees and obstructions.

More information about City Light’s electrical safety tree trimming program

If you are concerned that a tree may be interfering or putting electrical lines at risk or have a question about the tree trimming program, contact City Light (206) 386-1733 or by email at A City Light employee will respond to your questions or concerns, usually within two working days.

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