How it Works

When to Call 811

You will need to call 811, or fill out the online request form whenever you are planning a project on your property that involves digging into the ground, which includes things like installing fence or mailbox posts, planting trees and bushes, or installing patios and backyard ponds. The FREE call will help you “know what’s below” to keep you and your neighbors safe and prevent accidental damage to utility lines. It’s also the law.

Pennsylvania Act 287 requires notice of 3, but no more than 10, business days before your project is scheduled to begin to allow utility companies time to locate and mark their underground lines to prevent accidents. So, if you’re planning to begin your project over the weekend, you will need to call 811 on Monday or Tuesday of the prior week. Be aware that while the PA 811 call center is operated 24/7 and always open, state holidays will affect the review of your request. Those holidays are Martin Luther King, Jr. Day, President’s Day, Memorial Day, Independence Day, Labor Day, Columbus Day, Veteran’s Day, Thanksgiving (day of, as well as the day after), and Christmas Day.