The main purpose of this legislation, known as the Toxic Health Threat Warning Act of 2025, is to ensure that communities are informed before any water contaminated with harmful cyanotoxins is released from flood risk management structures. The objective is to protect public health by providing timely notifications about potential health risks associated with such water releases. Key provisions of the law include a requirement for the Secretary of the Army, through the Chief of Engineers, to test the water before it is released.