Reevaluation Program

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The law requires the Department of Pesticide Regulation (DPR) to continuously evaluate pesticides currently registered in California. One of the ways DPR completes this mandate is through the Reevaluation Program. Upon receipt of information indicating that use of a pesticide may have caused or is likely to cause an adverse effect to people or the environment, DPR is required to investigate. If based on that investigation, DPR finds that a significant adverse impact has occurred or is likely to occur, reevaluation is triggered. When a pesticide enters reevaluation, DPR reviews existing data and may require registrants to provide more data. The goal is to determine the extent of the potential hazard and to identify ways to reduce or eliminate problems.

Semiannual Reports Summarizing the Reevaluation Status of Pesticide Product

DPR produces a semiannual report summarizing the status of pesticides under reevaluation and any preliminary investigation for which factual or scientific information was received but no reevaluation was initiated.

Documents dated 2013 and before are available to the public upon request. If you would like to request any of the listed documents, email your request to

For content questions, contact:
Ann Prichard
1001 I Street, P. O. Box 4015
Sacramento, CA 95812-4015
Phone: (916) 445-1560