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Group B Approval Process

New or expanding Group B Public Water Systems are required to get approval prior to construction.  The approval for all Group B systems are done by the Cowlitz County Health Department, while Group A systems require approval from the Washington State Department of Health.   

  • Cowlitz County Health Department reviews systems with 9 or less connections consisting of a drilled well that:
    • Do not use a variable speed pump;
    • Do not provide fire flow;
    • Do not have special hydraulic considerations;
    • Do not have atmospheric storage in which the bottom elevation of the storage reservoir is below the ground surface;
    • Serve fewer than ten service connections
  • The Washington State Department of Health reviews any system that does not meet the above requirements.  A professional engineer is required to submit any design submittals for these types of systems.

Approval Documents

Group B Approval Process

Group B Water System Design Guidelines

Group B Design Submittal Workbook

WAC 246-291: Group B Public Water Systems

Cowlitz County Group B Ordinance

Cowlitz County Satellite Management Agencies

Covenants for Group B Public Water Supply Protection

Template for Declaration of Covenant and Restrictive Covenants

Example Informational Notice for Property Titles

Complete IOC Test for Group B Systems

Washington State Certified Drinking Water Labs

How To Hire An Engineer

List of Engineers (Previously Submitted Plans to DOH)

Plan Review Receipt

Well Site Inspection Application

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