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Clean waters provide healthy ecosystems for wildlife, plants and people. Inland fresh water is the source for 70% of U.S. drinking water supply, so protecting that supply from unnecessary contamination is important. Multiple federal and state agencies, including the EPA, work together to regulate pesticides and protect our waters.

Pesticides can be beneficial for the control of pests like weeds and insects, but all pesticides (including pesticides used in organic agriculture) have some level of toxicity to organisms that live in or drink water. Read the label completely before using a pesticide in or near water. Pesticide labels have "environmental hazard statements" that:

Learn more about:

Additional Resources:

If you have questions about this, or any pesticide-related topic, please call NPIC at 800-858-7378 (8:00am - 12:00pm PST), or email at npic@ace.orst.edu.

Last updated September 25, 2023