Utility Markout Information

South Jersey Gas or our contractor will mark out all public utility infrastructure prior to digging on your property. Customers are required to mark out all private utilities and lines with flags or water-based spray paint. This includes sprinkler systems, water lines, sewer lines, underground wells, septic systems, invisible pet fences and electric or water lines running to out buildings.

You can choose to mark out these private utilities and lines yourself, or hire a private contractor to do this for you. You can find a list of contractors at the bottom portion of this page. 

For more on markouts, watch this short video.

Private Markout Contractor List

Need assistance to mark out private utilities and lines such as sprinkler systems, septic systems and pet fences to your property? Below is a list of contractors who specialize in marking out private utility lines. 

Atlantic Leak Detection
Ground Penetrating Radar Systems (GPRS)

The Underground Detective
888-PIPES-99 (888-747-3799)


Customer Service

Can't find what you need on our site? Click or tap below to contact us via message or phone. We are happy to help you.

  Contact Us

811: Call Before You Dig

Call 811 or visit Call811.com before you dig – it's the law! Click or tap below for further information on utility pipeline markouts and pipeline safety.

  Learn More

Regulatory Information

Click or tap below to access our regulatory filings and tariff information.

  Learn More