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On this Page
  • Recent Reports and Announcements
  • Risk Evaluation and Mitigation Documents

Information on Metolachlor

See all Active Ingredients

Find information on the registration status, continuous evaluation and mitigation measures in California to regulate this active ingredient. An active ingredient is the chemical that makes a pesticide work on a target pest.

Active Ingredient: Metolachlor
Type of Pesticide: Herbicide
California Registration: Yes
Products Registered
EPA Registration: Yes
Fumigant: No
California Restricted Material: No
Toxic Air Contaminant (TAC): No
Volatile Organic Compound (VOC): No
Potential Groundwater Contaminant: Yes
Reevaluation Status: None
Chemical Class: Chloroacetanilide
DPR Chemical Code: 1996

Recent Reports and Announcements

  • Legal Agricultural Use Determination for Metolachlor/S-Metolachlor Degradate Detections in California
  • Metolachlor/s-Metolachlor Findings by the Subcommittee of the Pesticide Registration and Evaluation Committee
  • Legal Agricultural Use Determination for Metolachlor/s-Metolachlor Degradate Detections in California
  • Director's Response Concerning Detections of Metolachlor/s-Metolachlor Degradates in Groundwater of the State
  • Summary of Results for Fiscal Year 2000/01 Ground Water Protection List Monitoring for Alachlor, Metolachlor, and Two Degradates of Each
  • Study GW 09: Ground Water Protection List Monitoring for Metolachlor and Alachlor

Risk Evaluation and Mitigation Documents

  • May 2024 - Human Health Reference Levels for Metolachlor/S-Metolachlor and Degradates in Groundwater - English pdf  
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