Pesticide Detections in Montana Ground Water

The source of this information is the Montana Department of Agriculture, Ground Water Protection Program. The data is current as of January 1, 2011. Please note that none of the detected pesticide concentrations exceed established state numeric standards for those pesticides for which a numeric standard has been adopted. The information presented here is based on a statewide network of 42 permanent monitoring wells in addition to other ground water sampling initiatives undertaken by the Department of Agriculture. Also note that not all Montana counties are represented by the sampling and analysis effort. Ground water samples were sent to the Montana Department of Agriculture Analytic Laboratory in Bozeman, Montana where they were screened for over 90 different pesticides and pesticide breakdown byproducts at very low detection levels. For more information regarding the Ground Water Protection Program contact Amy Bamber, Program Manager; Phone: 406-444-3731 or see the Montana Department of Agriculture Ground Water Protection Program Web page.

To view the list of pesticides detected in the ground water of each county, select that county on the map or skip to the text links below.

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Last Modified: 07/13/2011