AB 1772: Fish and wildlife: invasive species: invasive mussels.

The bill aims to improve the prevention and control of invasive mussels in California's water supply systems. It requires water supply system operators to update their plans to address all invasive mussel species present in their systems as of January 1, 2026. The plans must be completed within 180 days of detection of a new invasive species. The bill also requires operators to minimize or eliminate the spread of invasive mussels. Additionally, it revises the definition of invasive mussels to include any nonnative biofouling mussel. The bill establishes a voluntary framework to prevent the overland spread of invasive mussels through the conveyance of watercraft overland. This framework includes minimum standards for watercraft inspection, decontamination, and quarantine, as well as a banding program to confirm the inspection, decontamination, or quarantine status of a watercraft.