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Bill

S 93

Harmful Algal Bloom and Hypoxia Research and Control Amendments Act of 2025

119th Congress Introduced by Tammy Baldwin and 15 co-sponsors

The bill reauthorizes and enhances federal research and funding to detect, monitor, and mitigate harmful algal blooms and hypoxia in U.S. waters.

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Bill Summary · S 93

Legislative bill overview

The Harmful Algal Bloom and Hypoxia Research and Control Amendments Act of 2025 (S 93) aims to reauthorize and update the federal framework for researching and addressing the environmental and public health threats posed by harmful algal blooms (HABs) and hypoxia (low oxygen conditions) in U.S. waters. The bill seeks to improve coordination among federal agencies, increase funding for monitoring and research, enhance early warning systems, and support state and local efforts to control and mitigate these water quality issues that threaten ecosystems, fisheries, and public health.

Why is this important

Harmful algal blooms and hypoxia events have increased in frequency and severity in recent years due to nutrient pollution and climate change, resulting in significant ecological damage, economic losses in fishing and tourism industries, and public health risks from contaminated water and seafood. This legislation is critical because it promotes a more coordinated and well-funded approach to understanding these complex phenomena, reducing their impact, and protecting valuable aquatic resources and communities that depend on them.

Potential points of contention

  • Funding levels: Debates may arise over the adequacy and source of funding increases for research and mitigation efforts.
  • Regulatory scope: Some stakeholders might argue the bill gives too much authority or responsibility to federal agencies at the expense of state and local autonomy.
  • Economic impact concerns: Industries implicated in nutrient pollution (e.g., agriculture, wastewater) may resist stricter controls or new regulatory measures.
  • Effectiveness of measures: Critics might question whether improved coordination and research alone can sufficiently address the root causes of HABs and hypoxia without broader environmental policy reforms.

Compiled from official sources — confirm details with the bill’s official record.

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