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Detections of current-use pesticides at 12 surface water sites in California during a 2-year period beginning in 2015

Data Series 1088

Prepared in cooperation with the Central Valley Regional Water Quality Control Board
By:
https://doi.org/10.3133/ds1088

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Abstract

Surface water samples were collected by the U.S. Geological Survey and multiple cooperators during base flow/irrigation runoff and storm runoff conditions from 12 sites throughout California, over 2 consecutive years beginning in April 2015, from both urban and agriculturally dominated watersheds. Water samples were analyzed by gas chromatography/mass spectrometry and liquid chromatrography/tandem mass spectrometry for a suite of 157 pesticides and degradates. Suspended sediments associated with these water samples were analyzed by gas chromatography/mass spectrometry for a suite of 131 pesticides and degradates. Overall, 85 pesticides and degradates were detected in the water: 32 fungicides, 25 herbicides, 27 insecticides, and 1 synergist. In the suspended sediment, 29 pesticides were detected: 9 fungicides, 10 herbicides, and 10 insecticides. Sixteen pesticides (bifenthrin, carbendazim, chlorpyrifos, clothianidin, diazinon, diuron, fenpyroximate, fipronil, fipronil sulfone, fluopicolide, imidacloprid, metolachlor, novaluron, oxyflurofen, permethrin, and simazine) were detected in the water at concentrations that were above at least one aquatic life benchmark value as defined by the U.S Environmental Protection Agency.

Suggested Citation

Sanders, C.J., Orlando, J.L., and Hladik, M.L., 2018, Detections of current-use pesticides at 12 surface water sites in California during a 2-year period beginning in 2015: U.S. Geological Survey Data Series 1088, 40 p., https://doi.org/10.3133/ds1088.

ISSN: 2327-638X (online)

Study Area

Table of Contents

  • Acknowledgments
  • Abstract
  • Introduction
  • Procedures and Methods
  • Quality-Control Methods and Results For Water and Suspended Sediment Samples
  • Results From Water Samples
  • Results from Suspended Sediment Samples
  • References Cited

Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Detections of current-use pesticides at 12 surface water sites in California during a 2-year period beginning in 2015
Series title:
Data Series
Series number:
1088
DOI:
10.3133/ds1088
Year Published:
2018
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Contributing office(s):
California Water Science Center
Description:
Report: viii; 40 p.; 2 Tables
Country:
United States
State:
California
Online Only (Y/N):
Y
Additional Online Files (Y/N):
Y