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State of California Department of Pesticide Regulation
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Reports Archive

Monitoring Pesticides in Wastewater Influent and Effluent

January 6, 2026

Study 310: Surface Water Monitoring for Pesticides in Agricultural Areas of Northern California, 2024

January 7, 2026

Study 321: Surface Water Monitoring for Pesticides in Agricultural Areas in the Central Coast and Southern California in 2026 and 2027

January 8, 2026

Status of Department of Pesticide Regulation Actions to Continuously Evaluate Pesticides and Mitigate Risks (as of June 30, 2025)

June 30, 2025

Standard Operating Procedure – Water TOC Analysis Using the Elementar TOC Vario Cube

December 15, 2025

2024 Status Report Pesticide Contamination Prevention Act

January 1, 2024

Fipronil Pet Products: Potential Risks to Aquatic Life (Draft)

December 19, 2025

Sampling for Pesticide Residues in California Well Water 2022 Update

August 1, 2023

Notice of Final Revisions to Pesticide Safety Information Series Leaflets

September 23, 2025

Evaluating the New PWC Modeling Scenarios for Ecological Risk Assessment

November 7, 2025

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