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AB 1691

Marine resources: copper-based antifouling paint: standards, studies, and best methods.

2025-2026 Regular Session Introduced by Diane Dixon

AB 1691 mandates California environmental standards and research for copper-based antifouling marine paints to reduce waterway contamination from vessel hull coatings.

Referred to Com. on E.S & T.M.
#marineresources #copper-basedantifoulingpaint #standards #studies #andbestmethods
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Bill Summary · AB 1691

Legislative bill overview

AB 1691 establishes standards and studies for copper-based antifouling paint use in California marine environments. The bill requires research into environmental impacts and best management practices to reduce copper contamination from vessel hulls while maintaining necessary marine infrastructure protection.

Why is this important

Copper-based antifouling paints prevent marine organism buildup on ships and structures but release copper into waterways, harming aquatic ecosystems and accumulating in sediments. California's coastal waters already face copper pollution concerns, making regulation of these widely-used paints relevant to water quality and marine habitat protection.

Potential points of contention

  • Economic burden on maritime industry: Stricter standards or paint restrictions could increase operational costs for shipping companies, fishing vessels, and port operators, potentially raising consumer costs
  • Effectiveness of alternatives: Available copper-free antifouling options may be less proven, more expensive, or require more frequent application, creating practical compliance challenges
  • Balancing environmental protection with biofouling prevention: Overly restrictive standards might force use of untested alternatives or reduce hull maintenance effectiveness, while weak standards won't adequately address water quality concerns

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

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