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Reports - Groundwater Archive

2026 Pesticide Drinking Water Standards and Information

January 1, 2026

Study 182/228: Trend Analysis of Regulated Agricultural Pesticide Concentrations in Groundwater in Fresno and Tulare Counties

July 1, 2026

2025 Status Report Pesticide Contamination Prevention Act

January 1, 2025

Study 318a: Cooperative Groundwater Monitoring in Santa Cruz County of Region 3 with the Central Coast Regional Water Quality Control Board

June 1, 2026

Study 228: Monitoring Groundwater Concentrations of Pesticides in Sensitive Areas with High Agricultural Use (Well Network Sampling) Annual Update 2023

December 1, 2025

Sampling for Pesticide Residues in California Well Water 2025 Update

December 1, 2025

2024 Status Report Pesticide Contamination Prevention Act

January 1, 2024

Sampling for Pesticide Residues in California Well Water 2022 Update

August 1, 2023

2025 Pesticide Drinking Water Standards and Information

July 1, 2025

The Qualification of Method EMON-SM-05-061 as Unequivocal According to the Pesticide Contamination Prevention Act

July 28, 2025

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