Pesticide Stewardship Partnership Data Viewer
Upcoming Events:
Need pesticide credits? Check out Oregon Department of Agriculture's website to find in-person and online opportunities in English and Spanish. (https://oda.direct/PestRecertClasses)
Upcoming Spanish opportunity: The OSU Pesticide Safety Education Program (PSEP) is offering a Spanish‑language Agricultural Core recertification webinar on Wednesday, February 4, 2026. This webinar is presented in Spanish only and focuses on the latest updates in agricultural pest management, safety, and regulation.
El Programa de OSU de Educación en Seguridad de Pesticidas (en inglés, Pesticide Safety Education Progra, PSEP) ofrecer a un seminario virtual de recertificación en español para el sector agrícola el miércoles 4 de febrero de 2026.
Este seminario virtual, totalmente en español, se enfocará en el manejo de plagas en cultivos agrícolas. Se presentarán los últimos avances en el manejo de plagas, seguridad y regulaciones.
Regístrese aquí: https://oda.fyi/PSEPCourseRegistration
Programa: https://oda.fyi/PSEPContinuingEducation
Si tiene alguna pregunta o necesita ayuda con la inscripción, contacte a OSU PSEP al 503-737-5958 o a
Créditos Básicos en agricultura (Español)
Agricultural Core in Spanish (English Version)
Overview of the Pesticide Stewardship Partnership: The state-wide Pesticide Stewardship Partnership (PSP) Program is a multi-agency program. The PSP is funded equally by pesticide registration fees collected by the Oregon Department of Agriculture, and general funding from the Oregon legislature. It's primary focus is to reduce the concentration of pesticides in surface waters through voluntary educational and technical support events. It is an incentive-based program that relies on locally led partnerships to monitor pesticide levels in waterways and create solutions to protect water quality through locally led projects. The PSP works as a positive feedback loop with the water quality sampling used to evaluate the pesticides of concern and the effectiveness of collaborative projects on an annual basis.
The Walla Walla Basin Pesticide Stewardship Partnership (PSP) is a voluntary, community-based initiative administered by the Walla Walla Basin Watershed Council with support from the Oregon Department of Agriculture (ODA) and the Oregon Department of Environmental Quality (DEQ). The PSP program works to engage local farmers, landowners, and other pesticide users through education, monitoring, and promotion of best management practices. Key efforts include technical assistance, public meetings, fact sheets, and the use of water quality data to guide outreach and prioritize actions.
Since its inception, the PSP has made steady and measurable progress. Pesticide detections in surface waters have dropped by 83 percent since 2010, and detected exceedances of safety benchmarks for aquatic life are now rare. These improvements reflect the efforts of local pesticide users who have adopted best management practices, adjusted application timing, and switched to less harmful products. Their voluntary actions, supported by targeted outreach and technical assistance, are making a meaningful difference for water quality and stream health, benefiting both people and wildlife across the Walla Walla Basin.
If you are a pesticide applicator please take our quick survey on pesticide practices and conservation funding opportunities by clicking the link or scanning the QR code below.
Thank you!
Walla Walla Basin Pesticide Best Management Practices (BMP) Survey
The presentations below explain the goals of the Walla Walla Basin Pesticide Stewardship Partnership (PSP) and share the most recent data:
• 2024 PSP Data Presentation -- OR Dept of Environmental Quality
• Walla Walla Basin Pesticide Stewardship Partnership (PSP) 2024 Summary
The visuals below highlight the current Pesticides of Concern in the Walla Walla Basin and a seasonal calendar of pesticide use by crop type.
Stay Informed on Pesticide Use and Protection Measures
For the latest information on pesticide regulations and strategies to reduce environmental impacts, visit the Environmental Protection Agency's Mitigation Menu, it's a central hub with helpful links, tools, and guidance for growers and land managers.
Need help navigating the EPA’s Bulletins Live! Two system?
Download the guide below for step-by-step instructions on how to access area-specific pesticide use restrictions.
Download: EPA "Bulletins Live! Two" Guide