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Pesticides and Water Quality

California creeks and rivers are being contaminated with pesticides, primarily diazinon and chlorpyrifos. These and other pesticides are not only a threat to aquatic life, but they can also affect the quality of our drinking water.

In residential areas

Pesticides Used Around Homes and Gardens

  • How are pesticides affecting water quality?
  • How do pesticides get into our creeks and rivers?
  • What are safer alternatives to pesticides?
  • Safe use and disposal of pesticides

In California agriculture

Dormant Organophosphate Sprays in Tree Fruit Crops

Statewide IPM Program, Agriculture and Natural Resources, University of California
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For noncommercial purposes only, any Web site may link directly to this page. FOR ALL OTHER USES or more information, read Legal Notices. Unfortunately, we cannot provide individual solutions to specific pest problems. See our Home page, or in the U.S., contact your local Cooperative Extension office for assistance.

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