About EPA

Construction Approval: Pinyon Plain Underground Uranium Mine (formerly Canyon Mine), Coconino County, Arizona

Construction approval for sources that emit radionuclides for Pinyon Plain Mine (formerly Canyon Mine), Coconino County, Arizona, (40 C.F.R. §61.08).

Vapor Intrusion Screening Level User's Guide

EPA has prepared several documents and tools to support development of its Final Subsurface Vapor Intrusion Guidance.

EPA Proposes Plan to Step Up Groundwater Cleanup at San Fernando Valley Superfund Site, Increasing Supply of Safe Drinking Water

U.S. Environmental Protection Agency (EPA) has released a proposed plan to address a contaminated groundwater plume at the San Fernando Valley (Area 2) Superfund site, located near Glendale, CA. EPA is seeking public input on the plan through April 14th.

Release Date: March 16, 2026

EPA Proposes to Give Colorado Primacy to Protect Underground Water Resources

Keeping promise to fast track UIC permitting, expand cooperative federalism, bolster energy dominance

Today, U.S. Environmental Protection Agency (EPA) announced its proposed approval of the state of Colorado’s request to administer permitting for Class VI underground injection wells (UIC) under the Safe Drinking Water Act (SDWA).

Release Date: March 19, 2026

Environmental Services Branch Laboratory

overview of the Environmental Services Branch Laboratory's functions and features

Laboratory Services and Applied Science Division

The state-of-the-art laboratory is occupied by by the Region 4 Science and Ecosystem Support Division (SESD).

Region 2 Office

overview of the Region 2 Office's functions and features.

SPod Development Plan Community Presentation

SPod Deployment Plan Community Presentation on February 11, 2020.

Headquarters Facilities at Federal Triangle

overview of the Headquarters Facilities at Federal Triangle's functions and features.

Environmental Science Center

overview of the Region 3 Environmental Science Center's functions and features

New England Regional Laboratory (NERL)

overview of the New England Regional Laboratory (NERL) functions and features.

Program Announcements and Initiatives

The CROMERR newsroom provides current news and links to EPA and other services and other cross-media electronic reporting regulation news.

List of Manufacturer-Requested Risk Evaluations under TSCA Section 6

Information on EPA's risk evaluation process for existing chemicals under amended TSCA.

Administrator Zeldin Messages to EPA Employees

Messages or memoranda from Administrator Lee Zeldin to EPA managers and staff regarding and reaffirming personnel protections, management transparency, scientific integrity, and more related to maintaining the public trust.

Message to EPA Employees from Administrator Zeldin: Transparency and Earning Public Trust in EPA Operations in 2026 (March 16, 2026)

Message sent from Administrator Zeldin on March 16, 2026 reaffirming a commitment to transparency in EPA’s operations.