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Pesticides and water quality
Water Quality Program Description
As the state lead agency for FIFRA (Federal Insecticide, Fungicide, Rodenticide Act), The Oregon Department of Agriculture (ODA) Pesticides Program holds the primary responsibility for pesticide registration and use regulation within the state of Oregon. As the Environmental Protection Agency (EPA) designated state lead agency for pesticides, ODA is responsible for overseeing the development and implementation of the Pesticide Management Plan (PMP) for the state of Oregon as stipulated in the annual EPA/ODA Consolidated Pesticide Cooperative Agreement.
In Oregon, statutory authority for development and enforcement of water quality policies lies with several different state agencies, primarily the Oregon Department of Environmental Quality (DEQ). An inter-agency team (the Water Quality Pesticide Management Team or WQPMT) composed of representatives from these agencies has been formed to efficiently address the protection of waters of the state from pesticide contamination.

Water Quality Pesticide Management Team (WQPMT)

​The Water Quality Pesticide Management Team (WQPMT), composed of representatives from ODA, Department of Forestry (ODF), DEQ, the Oregon Health Authority (OHA) and Oregon State University (OSU), was formed in 2007 to address water quality issues in Oregon related to pesticide use. The WQPMT facilitates and coordinates water quality activities such as monitoring, analysis and interpretation of data, effective response measures, and management solutions. The initial goal of the WQPMT was to develop and implement a statewide pesticide management plan (PMP) which was approved by EPA in 2011.

Members (to email a member, click on the name):

​​​​Agency Name​ ​​Title​ ​Phone​
​ODA ​Steve Riley​ ​Water Issues Specialist ​(503) 986-6485
ODA Rose Kachadoorian Endangered Species Specialist​ ​(503) 986-4651
​ODA Sheila Marcoe ​Water Quality Monitoring Specialist ​(503) 986-4707
​DEQ Kevin Masterson ​Agency Toxics Coordinator ​(503) 229-5615
​DEQ Eugene Foster Manager, ​Wastershed Management Section ​(503) 229-5325
OHA​ David Farrer​ Public Health Toxicologist​ ​(971) 673-0971
ODF​ Kyle Abraham​ Water Quality Specialist ​(503) 945-7473
OSU​ Jeffrey Jenkins​ ​Professor, Environmental & Molecular Toxicology ​(541) 737-5993

WQPMT Goals and Objectives under Oregon's Pesticide Management Plan (PMP)
  • Identify and prioritize higher risk pesticides, use patterns, and watersheds.
  • Facilitate water quality monitoring plans, resources, and activities.
  • Annually evaluate pesticide water monitoring results.
  • Facilitate, when required, management solutions and outreach/educational activities through local stakeholder groups to prevent and/or reduce pesticide contamination in water.
  • Improve communication with state and federal agencies, farmers, commodity groups, OSU Extension, environmental groups, industry, local water entities, and others about pesticides and water quality.
  • Measure progress and try new strategies if necessary.

Pesticides of Interest (POI) and Pesticides of Concern (POC)

Nationwide, state agencies originally compiled a list of 57 active ingredients or groups of active ingredients that were most likely to affect water quality. The WQPMT added additional local Oregon Pesticides of Interest, resulting in a current total of 73 Pesticides of Interest.  Of these 73 active ingredients, the WQPMT annually selects a subset of this list for further, more detailed evaluation.  Designation as either a "Pesticide of Interest" or " Pesticide of Concern" is based largely on monitoring data and other "weight-of-evidence" factors that may indicate a potential risk to water resources.  The overall objectives are to (1) identify and characterize pesticides that may pose a risk to water resources, (2) actively manage them by facilitating efforts to reduce or prevent contamination below the reference point (an established benchmark or standard) and (3) demonstrate how management efforts are keeping concentrations at acceptable levels. 

2012-2013 Pesticides of Interest (POI)
Definition: A pesticide that has the potential to occur at concentrations approaching or exceeding a federal, state or tribal health or environmental reference concentration. All those listed are currently under evaluation.
  • 2,4-D 
  • Atrazine
  • Metolachlor
  • Metribuzin
  • Metsulfuron methyl
  • Propiconazole
  • Simazine
  • Sulfometuron methyl

2012-2013 Pesticides of Concern (POC)
Definition: A pesticide that approaches or exceeds an established benchmark concentration, indicating a possible risk to human or ecological life.
  • Azinphos-methyl
  • Carbaryl
  • Chlorpyrifos
  • Diuron
  • Ethoprop
  • Malathion

2014 Pesticide Stewardship Parnership (PSP) Letter to Stakeholders​, pdf
An Oregon Strategy for Collecting Unwanted/Waste Pesticides​, pdf (750K)
Pesticide management plan, pdf (2.3MB)
USGS Clackamas River Basin 2008 Report
EPA human health benchmarks
EPA aquatic life benchmarks
Complete list of pesticides of interest and concern, pdf (124K) 
WQPMT 2012 Poster​,​ pdf (598K)
DEQ Pesticide Stewardship Parnership (PSP) Program​
Oregon State University, Integrated Plant Protection Center​
OSU Extension - Southern Oregon Research & Extension Center, Integrated Pest Management Program​
OSU Extension - North Willamette Research & Extension Center, Integrated Pest Management Program​
US EPA: Integrated Pest Management Principles​