811 In Your State

New Hampshire

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

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Dig Safe System, Inc.
811 or 888-344-7233

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11 Upton Dr.
Wilmington, MA 01887

M - F 0600 - 1800
Damage / Emergency 24 Hours

Advanced Notice: 3 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: 30 days
Defines the period of time the facility marks (paint, flags, stakes, etc.) are valid according to state law or practice.