811 In Your State

Maryland

Explore damage prevention information, local contacts and rules for safe digging in Maryland.

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District One Call
811 or 1-800-257-7777

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Details

Address:
7223 Parkway Drive
Suite 100
Hanover, MD 21076

Hours
M - F 0700 - 1700
Emergency 24/7

Advanced Notice: 2 business days
Number of days in advance of a digging project that you need to notify the one call center of your intent to dig.

Marks Valid: 12 business days
Defines the period of time the facility marks (paint, flags, stakes, etc.) are valid according to state law or practice.