This Act amends existing law to expand research, mandate five-year action strategies, and enhance monitoring and response coordination across marine and freshwater systems to combat harmful algal blooms and hypoxia.
Dan Sullivan
Senator
AK
The Harmful Algal Bloom and Hypoxia Research and Control Amendments Act of 2025 significantly updates federal efforts to combat harmful algal blooms (HABs) and hypoxia across all U.S. waters, including freshwater systems. The bill expands the scope of the interagency Task Force, mandates the creation of a five-year national Action Strategy for HABs, and enhances monitoring and forecasting capabilities. It also clarifies agency roles, assigning EPA new duties for freshwater blooms while tasking NOAA with marine and Great Lakes response, and establishes a new incubator program for control technologies.
If you live near a lake, a river, or the coast, you’ve probably heard about—or smelled—a harmful algal bloom (HAB). These toxic events, often called red tides or green slime, aren’t just gross; they can shut down beaches, kill fish, and make people sick. The Harmful Algal Bloom and Hypoxia Research and Control Amendments Act of 2025 is basically a major upgrade to the federal government’s playbook for dealing with these water quality disasters, significantly increasing the scope of research and funding through 2030.
This bill expands the focus of federal efforts beyond the coasts and Great Lakes to include all freshwater systems—lakes, rivers, and reservoirs—for both HABs and hypoxia (low-oxygen zones). It mandates a new national Action Strategy every five years to coordinate efforts across the entire country, and it officially brings the Department of Energy onto the federal task force. Crucially, it authorizes serious money for the next five years: $19.5 million annually for NOAA and $8 million annually for the EPA to tackle these issues.
One of the biggest changes here is how the federal agencies divide the work. Previously, roles could get blurry. This bill clarifies things: NOAA (National Oceanic and Atmospheric Administration) will focus its response activities on marine, coastal, and Great Lakes events. Meanwhile, the EPA (Environmental Protection Agency) gets a specific, dedicated mission to develop operational monitoring and forecasting programs for freshwater HABs and hypoxia in lakes, rivers, and reservoirs.
This division of labor matters for people who rely on local water bodies. If you’re a town manager worried about the drinking water intake from a local reservoir, you now have a clear federal partner—the EPA—tasked with developing the tools to predict and potentially prevent the next bloom. The bill’s goal here is efficiency, though it does mandate the EPA focus on "new approaches" and avoid duplicating existing work, which is good for innovation but could cause snags if it means they have to abandon established, effective monitoring programs.
The bill isn't just about research; it’s about finding real solutions. It establishes a National-level incubator program to fund research and development for new strategies and technologies to prevent or control HABs. Think of it as a venture capital fund for scientists working on things like better filters or environmentally safe bloom treatments. When handing out this money, the program is specifically directed to prioritize methods that benefit low-income, tribal, and rural communities—groups often hit hardest when local water quality collapses.
Another provision that will make life easier for local governments and tribes is the new power to waive local funding requirements for federal grants aimed at addressing these events (Section 3). Often, federal environmental grants require the local recipient to match a percentage of the funds. If a small town or tribe simply can't afford that local share, a federal official can now waive the requirement entirely. This is a game-changer for under-resourced communities facing costly environmental emergencies, ensuring they don’t lose out on critical federal aid just because their budget is tight.
When a major HAB or hypoxia event hits, the government assesses its impact to determine what kind of aid is needed. This bill significantly expands the criteria for that assessment (Section 3). They must now look closely at public health risks, the duration and spread of the event, and, critically, economic and subsistence impacts.
This means if you’re a commercial fisherman, a tourism operator, or part of a tribe that relies on traditional fishing grounds, the federal assessment must now explicitly measure your losses against historical data. Furthermore, the Task Force must now consult with States, Indian tribes, and local governments—not just federal agencies—as they develop their national strategies. This ensures that the people who actually live with the consequences of these blooms have a direct say in how the nation prepares and responds.