Call 811 before you dig logo.

Call before you dig

Dial 811 for free utility pipeline location

Call 811 before you dig logo. 

When digging on your property for any reason, it's important to have the locations of underground utility pipelines verified and clearly marked. Striking a utility pipeline may result in service disruptions, bodily harm, fines and/or repair costs.

Dial 811 at least two full business days (not including the day you call) before you plan to dig, no matter the size of your project. It's not only smart, it's the law.

If you prefer to submit a utility location request online, visit the Washington Utility Notification Center.

How it works

Before you call 811, you should outline your dig area with white spray paint.

When you call, an operator will record information about your dig and notify affected utility companies, including PSE. We will dispatch a technician to mark the location of PSE's electric and gas lines with paint and/or flags.

Even if you are a homeowner, the law says you must call.

PSE locates and marks its own lines for free, but privately owned utility lines must be located by a separate vendor, typically for a fee. To better understand which utility pipelines belong to you, visit King County's interactive utility pipeline guide.

When you dig

Use only hand tools when digging within two feet of the utility locate marks. If necessary, expose electric and gas lines carefully.

For easy identification, underground utility pipelines are marked using the following color code:

PSE natural gas pipeline marker  
PSE natural gas pipeline marker


Utility Type












Reclaimed water (not potable)




Proposed excavation

Pipeline marker facts

Pipeline markers are used to indicate the presence of high-profile natural gas pipelines and are typically situated along highways and intersections between major roads and railways. These markers display the name and emergency contact information of the pipeline operator.

Pipeline markers and warning signs only indicate the presence of a pipeline, and should not be used to determine its exact location.