WELCOME TO
Harmful Algal Bloom Control
Technologies & Regulatory Logistics
A collection of HAB control regulations and permitting information to help
users navigate algaecide use in marine and freshwater
WELCOME
WHAT WE DO
WHY IT MATTERS
WHAT WE SUPPORT
RESOURCE NAVIGATION
Quick Access to Key Tools
Easily find permits, research, technologies, and approved products related to HAB control.
ACTS AND REGULATORY AGENCIES
Permitting Laws
Laws and regulations requiring permits for algaecide approval and deployment.

Federal Insecticide,
Fungicide, and Rodenticide
Act (FIFRA)
Regulates the use, sale, distribution, and registration of pesticides and algicides.

Federal Food, Drug, and
Cosmetic Act (FFDCA)
Authorizes the EPA to set pesticide tolerances in foods, including products used in marine or freshwater sites where fish or shellfish may be exposed and consumed by humans.

Pesticide Registration
Improvement Act (PRIA)
Establishes a fee-for-service system for pesticide registration at the EPA.

Clean Water Act National
Pollutant Discharge
Elimination System (NPDES)
Prohibits anybody from discharging "pollutants" through a "point source" into a "water of the United States" unless they have an NPDES permit.

State Policies and Permits
Each state has its own pesticide permitting and registration process. Although additional regulations may apply, each state must follow the minimum pesticide requirements set forth by FIFRA. State-specific entities such as the Department of Natural Resources, Department of Public Health, and State Wildlife Commissions are often involved in the review of Experimental Use Permit applications and pesticide registration.

Marine Protection, Research
and Sanctuaries Act (MPRSA)
Regulates the intentional transportation and disposal of materials into ocean waters.

Section 10 of the Rivers and
Harbors Act
Prohibits unauthorized obstruction or alteration of U.S. navigable waters. A permit from the USACE is required for work or structures in, over, or under these waters, including many water bodies and wetlands regulated by the Corps.

Section 404 of the Clean
Water Act
A permit is required for the discharge of dredged or fill material into waters of the United States.
Acts Requiring Compliance
Regulatory statutes with which the deployment of algaecide products must comply.

Endangered Species Act
Ensures actions authorized, funded, or carried out are not likely to jeopardize the continued existence of any listed species or result in the destruction or adverse modification of designated critical habitat of such species. EPA has an ecological risk assessment process for the evaluation of potential risk to endangered and threatened species from exposure to pesticides.
Magnuson-Stevens Act
Protects habitat that fish need to spawn, breed, feed and grow to maturity and ensure a safe and sustainable supply of seafood.
Marine Mammal Protection
Act (MMPA)
Prohibits the disturbance of a marine mammal or marine mammal stock in the wild by causing disruption of behavioral patterns, including but not limited to migration, breathing, nursing, breeding, feeding, or sheltering (Level B harassment).

National Environment Policy
Act (NEPA)
Requires federal agencies to assess the environmental effects of their proposed actions prior to making decisions.

Migratory Birds Treaty Act (MBTA)
Prevents the taking, possession, transportation, sale, purchase, barter, importation, exportation, and banding or marking of migratory birds unless otherwise permitted. Under the MBTA, “take” refers to bird death by intentional (hunting) or incidental means. As “incidental taking” may result from human activities that disturb bird behavior, migratory bird habitats essential to standard behaviors, including nesting, foraging, and migration, are also protected under this act.
National Marine Sanctuaries Act (NMSA)
Authorizes the Secretary of Commerce to designate and protect areas of the marine environment with special national significance due to their conservation, recreational, ecological, historical, scientific, cultural, archeological, educational or esthetic qualities as national marine sanctuaries.
Section 307 of the Coastal Zone Management
Act (CZMA)
Referred to as the “federal consistency” provision of the CZMA, gives states a strong voice in federal agency decision making, which they otherwise would not have, for activities that may affect a state’s coastal uses or resources.
CONTROL STRATEGIES
Types of HAB Control Technologies
Determining what type of product you have is key as each type has a different process for registration
Chemical
Biological
Physical
Minimum Risk Pesticides
Conventional Chemical
Biochemical Pesticides
Antimicrobial Pesticides
Minimum Risk Pesticides

Conventional Chemical
Conventional pesticides are all active ingredients other than biological pesticides and antimicrobial pesticides. Conventional active ingredients are generally produced synthetically, i.e., are synthetic chemicals that prevent, mitigate, destroy, or repel any pest; or that act as a plant growth regulator, desiccant, defoliant or nitrogen stabilizer.
Wood preservative and anti-foulant products that do not have antimicrobial uses and agricultural fungicide and aquatic herbicide products are either classified as a conventional or a biochemical pesticide. Biochemical pesticides with a toxic mode of action are classified for the purposes of the registration process as conventional pesticides.
DISCLAIMER
Warning & Report
Content last updated as of: March 04, 2025, Monday
The information available through US HAB CTI's web site is provided as a public service and if for educational purposes only. All efforts have been made to ensure the material on this site is accurate and up to date However, US HAB-CTI and University of Maryland Center for Environemntal Science cannot be held responsible for any circumstances resulting from its use, unavailability, or possible inaccuracy.
US HAB-CTI makes no representations and specifically disclaims all liabilities and warranties, express, implied, or statutory, regarding the accuracy, timeliness, or completeness for any particular purpose of any material contained on this site.
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