Skip to the main content of the page


​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​About the program

The Pesticide Stewardship Partnership (PSP) Program is a voluntary program that relies on local partnerships to monitor pesticide levels in waterways and enact solutions to protect water quality while managing pests and maintaining crop yield. Local efforts include implementing projects based on technical assistance, outreach, and education. The PSP works as a feedback loop with the water quality sampling data continuously being used to evaluate pesticides of concern,​ the effectiveness of education and collaborative projects on an annual basis. 

Every two years the Oregon Department of Environmental Quality assesses state water ways for water quality standards. Water bodies that do not meet water quality standards will likely receive a 303-d listing. With a 303-d listing there is a DEQ required management plan in place to control certain pollutants, such as pesticides. The multi-agency PSP is an alternative to a 303-d listing, and the restrictions and actions associated with this listing. This is why many pesticide users support the PSP Program, it allows an opportunity for education, technical assistance and increased awareness to take place, prior to the possibility of regulatory action by DEQ.​

There are currently eight PSP areas across the state​ that cover a range of land use and partner groups. The goals of the PSP program are to: 

  • Identify potential concerns and improve water quality affected by pesticide use around Oregon
  • Combine local expertise in water quality sampling results to encourage voluntary changes in pesticide use and management practices. 
  • Find ways to reduce pesticide levels while measuring improvements in water quality and crop management. 
  • Work toward measurable environmental improvements, making Oregon waters safer for aquatic life and humans. 

​PSP​ Area

Local Lead Partner
Long Tom Watershed Council
​Clackamas River Basin Council
​Hood River
Hood River Soil and Water Conservation District​
​Middle Deschutes
​Jefferson Soil and Water Conservation District
​Middle Rogue
Jackson Soil and Water Conservation District
​Marion Soil and Water Conservation District
​​Walla Walla
Walla Walla Watershed Council​ ​
​Wasco County Soil and Water Conservation District
​This PSP project is paused until a local lead can be found

PSP successes 

Each year,​ ODA reviews the water quality data with other agencies and our local partners to look for improvements in water quality. A comprehensive list of program successes can be found in the biennial report.

In the Yamhill PSP basin, the total number of pesticide detections decreased from 751 in 2019 to 231 in 2021, a decrease of 69 percent. Similarly, the total number of exceedances decreased from 72 in 2019 to 46 in 2020 and, in 2021, there were only 16 exceedances of a water quality criterion or ALB. 

In 2021 in the Clackamas PSP basin, only one analyte, chlorpyrifos, exceeded the water quality criteria/aquatic life benchmark values. In 2020 five analytes were detected at concentrations exceeding their water quality criteria or aquatic life benchmarks (chlorpyrifos, diuron, bifenthrin, imidacloprid, and acephate).​

Endangered species in PSP areas 

A main goal of the PSP is to improve water quality for local aquatic life. Oregon is home to many threatened or endangered fish and other freshwater animals. The species below are listed either as threatened or endangered in Oregon or federally. By keeping pesticides out of waterways, we can help preserve these species. 

PSP Bas​​in​
​Federally or Listed State Species
​coastal cutthroat trout
​spring chinook, coho salmon, winter steelhead, coastal cutthroat, pacific lamprey, rainbow trout, reticulate sculpin
​Hood River
​coho salmon, summer steelhead, winter steelhead, coastal cutthroat, redband trout
​​Middle Deschutes
summer steelhead, redband trout​
​Middle Rogue
​coho salmon, coastal cutthroat trout, summer steelhead, winter steelhead, pacific lamprey, rainbow trout
​spring chinook, coho salmon, winter steelhead, coastal cutthroat, pacific lamprey, rainbow trout
​Walla Walla
​margined sculpin, redband trout, bull trout, summer steelhead, redband trout, pacific lamprey
​spring chinook, fall chinook, coho salmon, summer steelhead, coastal cutthroat trout, pacific lamprey, redband trout

​spring chinook, winter steelhead, coastal cutthroat trout

Who manages the PSP? 

ODA is the state lead for the PSP program. ODA created an interagency team, the Water Quality Pesticide Management Team (WQPMT), composed of representatives from multiple state agencies has been formed to efficiently address the protection of waters of the state from pesticide contamination.

The WQPMT consists of representatives from the following agencies and academic institution:

  • Oregon Department of Agriculture (ODA) 
  • Department of Environmental Quality (DEQ) 
  • Oregon Department of Fish and Wildlife (ODFW)​​
  • Oregon Department of Forestry (ODF) ​
  • Oregon State University (OSU)​

​​Meeting information

​The WQPMT meets virtually on the third Thursday every other month. Meeting agendas and minutes are posted below.

Feedback from the public

The PSP Advisory Group (AG) represents a wide range of community groups interested in pesticide use and environmental topics. The AG was created to provide suggestions to the WQPMT on issues related to the administration of the Pesticide Stewardship Partnership. ​​​Members of this group include: 

  • Beyond Toxics
  • Walla Walla Basin Watershed Council
  • Oregon Forest and Industries Council
  • Oregon Farm Bureau
  • Oregon Board of Agriculture
  • Confederated Tribes of the Umatilla Indian Reservation
  • Clackamas Soil and Water Conservation District
  • Oregon Environmental Council 
  • Oregonians for Food and Shelter
  • City of Newport, Oregon
  • Oregon Association of Nurseries​​

​​Meeting information

Waste Pesticide Collection Program

Unused or unwanted pesticides, especially those in aging or damaged containers, can accidentally expose people to chemicals or cause pesticides to accidently enter waterways in many ways. ODA offers free collection events for proper pesticide disposal from agricultural and commercial applicators. Inventory from pesticide retailers, up to 1,000lbs per company per year, is occasionally considered to fill smaller events. Household pesticides can be disposed of through the Household Hazardous Waste Program​. ​These events are partially funded by pesticide registration fees. Over 719,000 lbs of pesticides have been collected and removed from the environment since 2006.

May 1, 2023, update: There are no pesticide collection events scheduled at this time. Events for November 2023-November 2024 tentatively are planned for the following counties: Hood River, Umatilla, Linn, and Coos. When the event details are finalized, the schedule and most-up-to-date information regarding collection events can be found on this web​page. Please check the website periodically for the collection schedule.​ 

To schedule a pick of triple-rinsed empty containers for recycling, please call 503.390.238​1 or email​. Drop-off of triple-rinsed empty containers are accepted anytime at the Agri-Plas Inc. office, 5016 Waconda Road NE, Brooks, OR 97305.


DEQ's Statewide Water Quality Toxics Monitoring Program

Water quality toxics monitoring information

EPA aquatic life benchmarks

The aquatic life benchmarks (for freshwater species) provided in the table are based on toxicity values reviewed by EPA and used in the Agency's most recent risk assessments developed as part of the decision-making process for pesticide registration. Aquatic Life Benchmarks for Pesticides Monitored in Oregon
EPA aquatic life benchmarks

EPA human health benchmarks for pesticides

The table includes benchmarks for acute (one-day) and chronic (lifetime) exposures for the most sensitive populations from exposure to pesticides that may be found in surface or ground water sources of drinking water. Human health benchmarks for pesticides

Fact Sheet: Pesticide Stewardship Partnerships in Oregon

PSP fact sheet

National Pesticide Information Center (NPIC)

NPIC provides objective, science-based information about pesticides and pesticide-related topics to enable people to make informed decisions about pesticides and their use. NPIC is a cooperative agreement between Oregon State University and the U.S. Environmental Protection Agency. National Pesticide Information Center website

Oregon State University's Integrated Pest Management (IPM) Center

Oregon IPM Center website



Kathryn Rifenburg
Pesticide Stewardship Specialist
Phone: 971-600-5073