Michigan Hydrovac & Excavation Regulations
Excavation laws, 811 requirements, and licensing information for Michigan.
Michigan requires excavators to contact MISS DIG 811 at least 3 full business days before excavation. The state's PA 174 provides the legal framework for underground facility damage prevention.
Hydrovac excavation is heavily utilized in Michigan due to challenging soil conditions, high water tables, and dense utility infrastructure in metropolitan Detroit and other urban centers.
Call Before You Dig: MISS DIG 811
Phone: 811 | Notice Required: 3 full business days
Visit MISS DIG 811 WebsiteTolerance Zone
Hand excavation or approved non-destructive methods required within 18 inches of marked facilities.
Key Regulations
PA 174 - Underground Facility Damage Prevention
Establishes mandatory notification, marking standards, and excavation safety practices.
MCL 460.721 et seq.
Extended Notice Period
Michigan requires 3 full business days advance notice, longer than many states.
Facility Marking Accuracy
Utility marks must be placed within 18 inches of the actual facility location.
Penalties for Violations
Michigan enforces substantial penalties for excavation violations.
Maximum Fine: $5,000 per violation
- ●Misdemeanor charges for knowing violations
- ●Civil liability for all damages and service disruption costs
Licensing Requirements
- Michigan Residential Builder or Maintenance & Alteration Contractor license as applicable
- Local municipal permits and licenses
- Proof of workers compensation and liability insurance
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