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Sunnyvale staff recommend pilot parks and data transparency instead of an immediate pesticide ban
Summary
City staff presented a 2025 in‑house study of pesticide use and concluded Sunnyvale should not eliminate all chemical pesticides immediately; they recommended a multi‑site pilot, phasing out highest‑risk products first, better data reporting, and signage to improve public transparency and safety.
City environmental services staff on July 21 told the Sunnyvale City Council that their 2025 study found the city uses pesticides in a measured way, is in regulatory compliance, and that an immediate ban would be costly and operationally difficult.
"We do not recommend eliminating all chemical pesticides from city use," said Emma Hinowasa, environmental programs manager, summarizing staff's draft recommendation to instead "complete a pilot pesticide free park study to help inform and realize the cost and best alternative management approaches." The study cited regulatory oversight by the U.S. EPA, California Department of Pesticide Regulation and the San Francisco Regional Water Quality Control Board and said Sunnyvale currently uses mostly "caution"‑labeled products with two items in the "warning" category being phased out.
The presentation explained types of herbicides used, application constraints, and the city's Integrated Pest Management (IPM) five‑step decision process that prioritizes education, prevention and mechanical controls before chemical controls. Staff said the city applies less than 0.5 gallon per acre on average annually and stressed that organic alternatives typically require more frequent applications and higher labor or contractor costs. Staff estimated removing glyphosate alone would increase costs by roughly 70–76 percent and that a full pesticide elimination would require substantial additional staff, equipment and long‑term operational changes.
Councilmembers asked staff to broaden any pilot beyond a single park, to include medians, school‑adjacent sites and a range of use levels, and to return with clearer metrics and a public outreach plan. Several public commenters and environmental advocates urged an eventual phase‑out of Roundup (glyphosate) and an updated IPM policy, called for more transparent quarterly reporting, and recommended stronger public notice before and after applications. The council asked staff to bring an informational memo with proposed pilot sites and monitoring plans before implementation.
