Summary of September 2025 Updates to Aquatic Life Benchmarks Table

EPA updated Aquatic Life Benchmarks table (view Aquatic Life Benchmarks and Ecological Risk Assessments for Registered Pesticides) on September 4, 2025. As of this date, there are a total of 782 chemicals (parent compound or degradate) listed in the table.

Updates to the Aquatic Life Benchmarks include the following newly registered pesticides and their degradates (new registrations):

• Veratrine;
• IPBC;
• Metamitron (and its degradate Desamino-Metamitron); and,
• Formaldehyde (and its degradate Paraformaldehyde).

Updates to the Aquatic Life Benchmarks also include new values for the previously registered pesticide Pyrimethanil, which is undergoing registration review (updated registration). 

For more information on these updates, please contact D. Ethan Harwood (harwood.douglas@epa.gov).