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Summary of September 2019 Updates to Aquatic Life Benchmarks Table

EPA updated Aquatic Life Benchmarks table (view Aquatic Life Benchmarks and Ecological Risk Assessments for Registered Pesticides) as of September 30, 2019. 

Updates to the aquatic life benchmarks include the following newly registered pesticides and their degradates (new registrations):

  • Flutianil;
  • Pydiflumetofen;
  • Transfluthrin; and
  • Fenpicoxamid (XDE-777)

Updates to the aquatic life benchmarks include the following new values for previously registered pesticides and their degradates undergoing registration review (updated registrations):

  • 1-Napthalene acetic acid (NAA);
  • 3-Trifluoromethyl-4-nitrophenol (TFM);
  • Acibenzolar;
  • Afidopyropen;
  • Aldicarb (and aldicarb degradates “aldicarb sulfone” and “aldicarb sulfoxide”);
  • Aliphatic esters;
  • Asulam;
  • Boric acid;
  • Bromuconazole;
  • Carfentrazone-ethyl;
  • Clodinafop-propargyl (and clodinafop-propargyl degradate “clodinafop acid”);
  • Cloransulam-methyl (and cloransulam-methyl degradate “cloransulam”);
  • Copper compounds;
  • Cyclanilide (and cyclanilide degradate “2,4-dichloroaniline”);
  • Cymoxanil;
  • Cyprodinil (and cyprodinil degradates “CGA 249287” and “CGA 275535”);
  • Dimethomorph;
  • EPTC (S-ethyl dipropylthiocarbamate);
  • Ethephon;
  • Fludioxonil;
  • Flumiclorac-pentyl;
  • Fomesafen;
  • Hexazinone;
  • Hymexazol;
  • Kresoxim-methyl;
  • Mefenoxam;
  • Mepiquat chloride/Mepiquat pentaborate;
  • Metaflumizone;
  • Metalaxyl;
  • Methoxyfenozide;
  • Niclosamide;
  • Nitrapyrin;
  • Noviflumuron;
  • Pendimethalin;
  • Propamocarb HCl; and
  • Quinoxyfen (and quinoxyfen degradates “2-oxo-quinoxyfen” and “DCHQ”)

For more information on these updates, please contact D. Ethan Harwood (, 703-347-0255).