Pesticides in Private Wells

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Pesticides are chemicals used to control “pests,” such as weeds and insects.

Normal field applications and home use, spills, misuse, or improper storage and disposal can all lead to pesticide contamination in groundwater. Several pesticides have been found in groundwater in Wisconsin.

Long-term use of drinking water that contains pesticides may increase the risk of developing cancer or other serious health problems.

Learn more about pesticides in drinking water, their various sources, health effects, and how to reduce your contact.

Learn what is happening around the state to address pesticide issues in groundwater, and about lead in your soil from the use of lead arsenate pesticides (P-45007).


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Last Revised: April 22, 2021