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Bill

SB 5645

Concerning stormwater control facilities and county jurisdiction.

2023-2024 Regular Session Introduced by Drew MacEwen

SB 5645 expands county jurisdiction over stormwater control facilities in Washington, potentially shifting regulatory authority from municipalities and private operators to county governments.

By resolution, reintroduced and retained in present status.
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WeVote Research Nonpartisan
Bill Summary · SB 5645

Legislative bill overview

SB 5645 modifies Washington state law regarding stormwater control facilities and expands county jurisdiction over these infrastructure systems. The bill adjusts how counties can regulate, maintain, and oversee stormwater management across their territories, potentially affecting both municipal utilities and private property owners who manage stormwater systems.

Why is this important

Stormwater management is critical for flood prevention, water quality protection, and public safety in both urban and rural areas. Clarifying county authority over these systems affects how infrastructure is funded, maintained, and regulated—with implications for property tax assessments, development costs, and environmental protection standards across Washington counties.

Potential points of contention

  • Municipal autonomy concerns: Cities and towns may resist expanded county jurisdiction over stormwater systems they currently operate independently, viewing it as loss of local control
  • Cost and liability allocation: Unclear which government entity bears maintenance costs and legal liability for stormwater failures could create disputes between counties, municipalities, and private property owners
  • Property rights impact: The bill may affect private property owners' existing stormwater facilities and their obligations to comply with new county regulations or contribute to county-managed systems

Compiled from official sources — confirm details with the bill’s official record.

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