Relating to the regulation of aquatic vegetation management by the Parks and Wildlife Department; providing a civil penalty; creating a criminal offense.

HB 4588 requires anyone managing aquatic vegetation in Texas public water bodies to follow specific guidelines: science-based methods, the state's aquatic vegetation management plan, local plans, and department rules. Violations can result in civil fines of $100-$10,000 per day or a misdemeanor charge under the Parks and Wildlife Code. The Parks and Wildlife Department can enforce these rules through lawsuits to stop violations or collect penalties, including recovery of investigation costs and attorney fees. The law takes effect September 1, 2025, and applies only to conduct occurring after that date.