Environmental Drilling Permits

Environmental drilling is required for investigation and cleanup of contaminated sites. Various agencies may have jurisdiction over these investigations and cleanups. Environmental drilling is also conducted for Real Estate Phase 2 environmental assessments. In accordance with the Sonoma County well ordinance, environmental drilling permits for these activities are issued by the Sonoma County Department of Health Services.

Visit the Environmental Drilling Permits FAQ page to learn more.

Apply for a Drilling Permit

For Regional Board Lead/Environmental Assessment/LOP Lead:


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