Detections of current-use pesticides at 12 surface water sites in California during a 2-year period beginning in 2015
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- Document: Report (5 MB pdf)
- Tables:
- Table 4 (40 KB xlsx) - Pesticide results in water samples from agricultural sites
- Table 5 (40 KB xlsx) - Pesticide results in water samples from urban sites
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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
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 |
Publication Date | July 27, 2018 |
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 |