The Toxic Health Threat Warning Act of 2025 requires the U.S. Army Corps of Engineers to test water before releasing it from flood control structures and to notify nearby communities if that water contains dangerous cyanotoxins (toxic substances produced by algae) above safe levels. Specifically, if testing shows cyanotoxin contamination exceeding 8 parts-per-billion, the Corps must alert the public, local governments, and Tribal nations about the planned release and its potential health effects before the water is discharged. This bill affects communities living near Corps-managed dams and flood management facilities, as well as state and local water authorities downstream from these structures. The legislation does not specify additional funding or implementation timelines, focusing instead on establishing a notification requirement to protect public health when contaminated water may be released.
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