The Environmental Protection Agency has released a long-awaited peer review of its analysis of a selenium toxicity study conducted for industry, which appears to generally support the agency's findings and is expected to inform the agency's effort to revise its decades-old water quality criteria for the pollutant, possibly allowing some states to move ahead with site-specific standards. The move comes as OSHA weighs new strategies to update its decades-old chemical permissible exposure limits, including greater reliance on EPA standards.
December 27, 2025