New Hampshire Sen. Jeanne Shaheen is joining a legislative bid to get a federal study on certain industrial chemicals released.
The Environmental Protection Agency has reportedly spent months blocking publication of the report, from an arm of the Centers for Disease Control and Prevention.
The study reportedly shows that PFAS chemicals may pose more risk to humans than the EPA has previously said.
Shaheen is co-sponsoring a Senate amendment on next year's big federal defense spending bill.
It would require release of the CDC study within a week after the bill takes effect.
EPA Administrator Scott Pruitt says the CDC has the authority to release the study, but the EPA does not.
The EPA will also hold a two-day meeting in Exeter later this month, to take input from around New England on forthcoming PFAS regulations.