Call 811 Call 811

Maryland

Maryland

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


One Call Centers

811 or
1-800-257-7777

Address:

7223 Parkway Drive
Suite 100
Hanover MD 21076

Hours:

M - F 0700 - 1700, Emergency 24/7

Advance 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.