Oregon State University
Oregon State University

Pesticides - commercial

Who can make a difference?

  • Agricultural producers--Farming, nursery operations, orchards, Christmas trees
  • Businesses--Lawn services, insect control, golf courses
  • Public space maintenance personnel--Parks, roadsides, school yards, sports fields

Causes of groundwater contamination

  • Excessive or ill-timed application
  • Spills
  • Improper disposal of containers, excess product, or rinse water
  • Well-drained soils or run-off that increase risks
  • Backflow into the water system
pesticide spraying graphic pesticide spill graphic

What can you do?

Individual action

Applicators

  • Comply with pesticide certification requirements.
  • Follow label instructions carefully.
  • Use least-toxic and least-leachable alternatives for pest control.
  • Install backflow devices and maintain an air gap when filling tank.
  • Properly store and handle pesticides to reduce spills and leaks.
  • Consider soil type and run-off potential when making application decisions.

General public

  • Hire pesticide applicators that use the practices listed above.
  • Buy products with minimal pesticide inputs, such as organic produce.
  • Send a letter to the manager of a public space requesting groundwater-safe use of pesticides.

Community action

  • Support research and education on ways to reduce risk to groundwater from pesticides.
  • Offer a disposal or recycling program for agricultural chemical containers and pesticide waste.
  • Recognize farmers and others who use safe practices.
  • Enforce clean-up of improper waste disposal or spills.
  • Distribute information on alternative pest control methods.
  • Send specific information about their soil type and pesticide leaching potential to landowners.

To learn more

Oregon Department of Agriculture

Pesticides Division
635 Capitol St.
Salem OR 97301
Phone: 503-986-4635
Fax: 503-986-4735

Information on training and certification for applicators, regulations, disposal events, and general questions related to commercial pesticide use.

Natural Resources Division
635 Capitol Street NE
Salem, OR 97301-2532
Phone: 503-986-4700
Fax: 503-986-4730

Ground Water Research and Development Program: Research funded by taxes on pesticides and fertilizers. Results available on the Web page.


OSU Extension Service

Call your county OSU Extension Service office.

  • Training available for applicator's recertification credit on handling pesticides to protect water quality.
  • Home*A*Syst assessment worksheet to identify risks to groundwater from storing and handling pesticides on your property
  • Publications on pesticides, including several on water quality protection

Northwest Coalition for Alternatives to Pesticides (NCAP)

P.O. Box 1393P
Eugene, OR 97440
Phone: 503-344-5044
Fax: 541-344-5044
E-mail: info@pesticide.org

  • As the name implies, a source of information for alternatives to pesticide use.
  • "No More Poisoned Wells: A Citizen's Guide to Oregon Groundwater Protection" (1990), 32 pages, available for a small charge.

US Geological Survey, Oregon District

10615 SE Cherry Blossom Dr.
Portland, OR 97216
Phone: 503-251-3200
E-mail: info-or@usgs.gov

Inquire about studies of pesticides in your community's groundwater.


Pesticide Telecommunication Network Hotline

Phone:1-800-858-7378

Information on toxicity and environmental fate of specific pesticides.