Washington Hydrovac & Excavation Regulations
Excavation laws, 811 requirements, and licensing information for Washington.
Washington requires excavators to contact Washington 811 at least 2 business days before beginning excavation. The state's Underground Utilities statute establishes the framework for damage prevention.
Hydrovac excavation is popular in Washington due to wet soil conditions in western parts of the state and dense urban infrastructure in the Seattle-Tacoma metro area. Non-destructive methods are highly valued.
Call Before You Dig: Washington 811
Phone: 811 | Notice Required: 2 business days
Visit Washington 811 WebsiteTolerance Zone
Reasonable care and non-destructive methods required within 24 inches of marked utilities.
Key Regulations
Underground Utilities Statute
Requires pre-excavation notification and establishes safe digging standards.
RCW 19.122
Utility Coordination Council
The Washington Utilities Coordinating Council provides best practices for damage prevention.
Environmental Compliance
Excavation must comply with Washington Department of Ecology environmental protection rules.
Penalties for Violations
Washington imposes penalties for excavation violations.
Maximum Fine: $10,000
- ●Gross misdemeanor for willful violations
- ●Liability for all damages and environmental remediation
Licensing Requirements
- Washington contractor license from the Department of Labor and Industries
- Local permits and business licenses
- Workers compensation and general liability insurance
Hydrovac Jobs in Washington
Browse current hydro excavation job openings in Washington.
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