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Williams Unified School District

Offering Choices to Strengthen Our Voices
The Healthy Schools Act of 2000 requires all California school districts to notify parents and guardians of pesticides they expect to apply during the year.  We intend to use the following pesticides in your school this year:
Name of Pesticide (Common Name)
Active Ingredient(s)
Roundup Power Max
48.7% Glyphosate, N (phosphonomethyl) glycine, in the form of its isopropylamine salt, 51.3% Other ingredients
Dow Agro Sciences: Goal 2XL
22.3% Oxyfluor fen: 2-chloro-1 (3-ethoxy-4-nitrophenoxy) 4-(trifluoromethyl) benzene, 77.7% Other ingredients
Broadworks Herbicide
40% Mesotrione, 60% Other ingredients 
Tempo Ultra WP
10% Cyfluthrin, cyano(4-fluoro-3-phenoxyphenyl)methyl 3-(2,2-dichloroethenyl)-2,2-dimethylcyclo-propanecarboxylate,
90% Other ingredients
Drexel-MSMA 6 Plus
47.6% Monosodium Acid Methanearsonate
Alion Herbicide
19.05%, Indaziflam, 80.95% other ingredients
Total Herbicide
24.5% Glufosinate-ammonium, 75.5% Other ingredients
R-11 Spreader Activator
90% Polyethylene glycol mono(branched p-nonylphenyl) ether, Butyl alcohol, Dimethylpolysiloxane, 10% Other ingredients
2, 4-D Amine Weed Killer
47.2% Dimethylamine sale of 2,4-dichlorophenoxyacetic acid, 52.8% inert ingredients
You can find more information regarding these pesticides and pesticide use reduction at the Department of Pesticide Regulation’s Web site(s) at

If you are interested in being notified about individual pesticide applications before they occur please click the link below and complete the request to join the notification registry.

Request for Individual Pesticide Application Notification

If you have any questions, please contact:

Sandra Ayón, Ed. D, Superintendent
Williams Unified School District
Phone: (530) 473-2550