US oil firms pumping secret chemicals into ground and not fully reporting it May 20, 2025

The Guardian
“We thought that the Colorado law was going to break through the culture of secrecy that surrounds the use of potentially toxic chemicals in oil and gas production,” said Dusty Horwitt, an attorney and researcher who was lead author on the analysis, which is based on public disclosures. “But the lack of compliance has left the secrecy in place, putting people’s health at risk.”
The report, released Tuesday by the environmental groups Physicians for Social Responsibility (PSR), Physicians for Social Responsibility Colorado, FracTracker Alliance, and the Colorado Sierra Club, was shared exclusively with the Guardian.
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