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RBOC Supporting Legislation to Address Copper-Based Antifouling Paint Concerns

March 21, 2025

RBOC is supporting AB 773 [Dixon], legislation that would suspend enforcement of regulations relating to copper-based antifouling paint until a determination is made of the best methods to regulate the use of copper-based antifouling paint within the state.

Copper-based anti-fouling surfaces are important to boating. From recreational boats in the water for a season to commercial ships that are in the water year-round, antifouling paint on the underwater part of the boat is fundamental to the proper maintenance and performance of almost all watercraft. The uncontrolled growth of marine organisms on boats significantly degrades performance, increases fuel consumption, contributes to the spread of aquatic invasive species and can even lead to a vessel sinking in extreme cases.

Boaters are doing their part to address the presence of copper in impaired water bodies in California. They are buying and using low-leach-rate copper-based antifouling paint approved by the Department of Pesticide Regulation in an attempt to reduce the amount of dissolved copper that is discharged into impaired water bodies.

Boaters have also been participating in studies to identify potential alternatives. To date, however, there is no replacement that is available, effective and affordable.

RBOC supports the provisions of AB 773 that would suspend enforcement of the regulations relating to copper-based antifouling paint until:

  • The completion and release any active studies related to the effectiveness of low-leach-rate paint before adopting any new regulations relating to copper-based antifouling paint or low-leach-rate paint.

  • The determination of the best methods to regulate the use of copper-based antifouling paint within the state.

  • A collaborative agreement on guidelines that provide for the uniform enforcement of the copper-based antifouling paint regulations throughout the state.

Tags AB 773 [Dixon], Assembly Member Diane Dixon, copper-base anti-fouling paint, copper-based anti-fouling surface, copper, boat hulls, Department of Pesticide Regulation
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RBOC is requesting that recreational boaters take action – this involves contacting your elected representatives to express a position on a key boating issue.

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