31
Mar
Hazardous Pesticide Breakdown Chemicals Found in Streams Nationwide, Raising Health Concerns
(Beyond Pesticides, March 31, 2021) Pesticide breakdown products are just as ubiquitous as their parent compounds in urban streams throughout the United States, according to research conducted by the U.S. Geological Survey (USGS) and published in Environmental Science and Technology. The first of its kind findings place an important spotlight on the long-term impacts of pesticide use on health and the environment. As new analytical methods provide evidence of dangers that were until now unable to be recorded, the data point to the need for a wholescale rethinking of the way pesticide products are approved by the U.S. Environmental Protection Agency, and community-based measures to protect local waterways. Â USGS researchers subdivided the U.S. into five regions (Pacific NW, Coastal California, Midwest, Northeast, and Southeast) and took 76 to 100 water samples in small streams for each region over the course of five years. Samples were tested for 108 pesticide active ingredients, and 116 transformation products (also known as breakdown products or metabolites) that arise as active ingredients degrade after a pesticide application. Â Of the active ingredients sampled, at least one pesticide was detected in 418 of 442 total stream samples conducted, representing a 95% detection rate. Breakdown products […]
