In 2025 the U.S. Environmental Protection Agency proposed redefining the term "Waters of the United States" under the Clean Water Act to limit federal jurisdiction to relatively permanent standing or continuously flowing bodies of water (for example, streams, rivers, lakes and oceans) and wetlands that are connected to such bodies of water.
November 17, 2025
high
policy
This describes the scope of a regulatory definition the EPA proposed for Clean Water Act jurisdiction.
Under the 2025 EPA proposal, lands removed from federal Clean Water Act jurisdiction could remain subject to regulation by state governments and tribal authorities.
November 17, 2025
high
policy
The proposal frames a division of regulatory responsibility between federal jurisdiction and state/tribal regulation for certain waters and wetlands.
The U.S. Environmental Protection Agency (EPA) coordinates with state and local agencies and can remain on site to oversee cleanup and to protect air, land and water following spills or releases into waterways.
November 06, 2025
high
process
Typical EPA role in environmental response and remediation after contaminant releases.
The U.S. Environmental Protection Agency classifies cadmium as a probable human carcinogen.
October 14, 2025
high
temporal
Toxicological classification used for assessing health risks of chemical exposures.
The U.S. Environmental Protection Agency classifies inorganic arsenic as a known human carcinogen.
October 14, 2025
high
temporal
Toxicological classification used for assessing health risks of chemical exposures.
In 2009 the U.S. Environmental Protection Agency issued an endangerment finding that concluded carbon dioxide and other greenhouse gases threaten public health and welfare, which serves as a legal basis for many U.S. climate regulations.
January 01, 2009
high
temporal
U.S. regulatory determination linking greenhouse gases to public health and enabling climate regulation.