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EPA Region 9 (Pacific Southwest)

Golden Gate Bridge and San Francisco Skyline
EPA’s Pacific Southwest (Region 9) implements and enforces federal environmental laws in Arizona, California, Hawaii, Nevada, Pacific Islands, and 148 Tribal Nations.
Map of region 9

Current Key Issues

  • Moss Landing Fire Response
  • Tijuana River Cross-Border Watershed
  • Response to 2025 Los Angeles Wildfires
  • Navajo Nation Abandoned Uranium Mines
  • Red Hill Fuel Storage Facility

Public Notices and Engagement

When EPA’s Pacific Southwest Region hosts public meetings, events, or other opportunities for public participation, they will be found here.

Newsletters

A quarterly newsletter covering EPA activities and stories of interest. 

Popular Topics

  • Air Quality Plans
  • Brownfields
  • Children's Health
  • Grants
  • Laboratory Services
  • Lake Tahoe
  • Marine Protection Permitting
  • Maui Wildfires
  • NPDES Wastewater Permits
  • Polychlorinated Biphenyls (PCBs)
  • Public Notices, Meetings & Events
  • Quality of Environmental Data
  • San Francisco Bay Delta
  • San Joaquin Valley
  • Superfund Sites
  • Tribal Programs
  • Underground Injection Control (UIC)
  • U.S.-Mexico Border
  • West Coast Collaborative

News Releases

  • EPA Selects Nevadaworks to Receive $349,984 for Environmental Career Training

  • EPA Selects 11 California Organizations to Receive $5.5 Million for Environmental Career Training

  • EPA Proposes Plan to Contain Groundwater Contamination at Orange County North Basin Superfund Site 

  • EPA Selects Maui County to Receive Over $3.6 Million for First-Ever Waste Collection Centers in West Maui

  • EPA orders LADWP to Inspect 100 Drinking Water Reservoirs and Tanks To Prevent Contamination Risks

  • EPA Enforcement Action Against Lodi Facility Results in Significant Chemical Safety Improvements


Subscribe to News Releases
(Under “All Topics” click on News Releases, then check the box next to Pacific Southwest Region)

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  • Media Center - News Releases and More
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  • Contact EPA’s Pacific Southwest Office

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Contact EPA
Contact EPA to ask a question, provide feedback, or report a problem.
Last updated on March 12, 2026
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