Companies with a financial interest in a weed-killer sometimes found in drinking water paid for thousands of studies federal regulators are using to assess the herbicide’s health risks, records of the U.S. Environmental Protection Agency show. Many of these industry-funded studies, which largely support atrazine’s safety, have never been published or subjected to an independent scientific peer review.

EPA records obtained by The Huffington Post Investigative Fund show that at least half of the 6,611 studies the agency is reviewing to help make its decision were conducted by scientists and organizations with a financial stake in atrazine, including Syngenta or its affiliated companies and research contractors.

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