{"id":36855,"date":"2024-10-31T00:01:11","date_gmt":"2024-10-31T04:01:11","guid":{"rendered":"https:\/\/beyondpesticides.org\/dailynewsblog\/?p=36855"},"modified":"2024-10-30T17:23:51","modified_gmt":"2024-10-30T21:23:51","slug":"pesticide-contaminated-water-wells-documented-representing-widespread-poisoning","status":"publish","type":"post","link":"https:\/\/beyondpesticides.org\/dailynewsblog\/2024\/10\/pesticide-contaminated-water-wells-documented-representing-widespread-poisoning\/","title":{"rendered":"Pesticide-Contaminated Water Wells Documented, Representing Widespread Poisoning"},"content":{"rendered":"

(Beyond Pesticides<\/em>, October 31, 2024) Approximately four in ten private wells in the state of Wisconsin contain toxic pesticides and pesticide metabolites, according to findings released earlier this year from a 2023 survey, entitled Wisconsin Agricultural Chemicals in Wisconsin Groundwater<\/a>, conducted by the Wisconsin Department of Agriculture, Trade, and Consumer Protection (DATCP) in partnership with U.S. Department of Agriculture’s (USDA) National Agricultural Statistics Service (NASS). An analysis of the survey findings from Wisconsin Public Radio<\/em><\/a> determined that \u201cmore than half of 29 pesticide compounds detected are unregulated in groundwater.\u201d Pesticides detected in this study include toxic herbicides atrazine<\/a>, dacthal<\/a>, metolachlor<\/a>, and alachlor<\/a>, commonly used by chemical-intensive corn and soybean growers throughout the United States, but they are particularly concentrated for use in Corn Belt states such as Wisconsin. Various neonicotinoid<\/a> insecticides were also detected. Pesticide leaching into both surface water and groundwater continues to impose adverse health and environmental impacts on communities across the nation, leading to advocates pushing for organic land management principles and practices to avoid the continuous use of toxic pesticides.<\/p>\n

Methods and Findings<\/u><\/p>\n

\u201cOf the 29 compounds detected, [Carla] Romano [groundwater specialist at DATCP] said 13 have established groundwater standards,\u201d based on an interview conducted by Wisconsin Public Radio<\/em>. \u201cNine pesticide compounds lacked any groundwater limits or health advisory levels. Seven only have health advisory levels.\u201d A primary obstacle to establishing standards that state officials pinpoint is an insufficient amount of peer-reviewed research on the health and ecological impacts of various specific pesticides.<\/p>\n

This survey is conducted on a five-year rotation basis, beginning in 1996, and has resulted in surveys in 1996, 2001, 2007, 2016, and 2023 to \u201cassess the presence of agrichemicals in Wisconsin’s groundwater.\u201d In each survey following the initial study, 50% of wells surveyed were already tested in the previous cycle with the other 50% newly selected, with state and national officials reporting that \u201c[t]his rotation strategy enabled the identification of new areas with agricultural chemical presence within the state and allowed for tracking changes in pesticide concentrations over time.\u201d The researchers used \u201ca stratified random sampling\u201d including NASS Land Use Strata for previously untested wells, providing data on the intensity of agricultural production on targeted land areas. Researchers describe the benefits of this research strategy as twofold:<\/p>\n

    \n
  1. \u201cFirst, samples were allocated proportional to agricultural intensity throughout the state.<\/li>\n
  2. “Second, the current method allows for comparisons of water quality to agricultural intensity in addition to location within the state.\u201d<\/li>\n<\/ol>\n

    The topline statistic worrying public health and environmental advocates, as well as regenerative organic and organic farmers and landowners in the state, is that the \u201cpercentage of wells that contained a detectable concentration of a pesticide or pesticide metabolite was 43.1%, up from 41.7% of 2016 and 33.5% in 2007.\u201d When comparing pesticide levels in waterways across different assessment years, DATCP arrives at some of the following additional conclusions:<\/p>\n