EPA in California
EPA’s Pacific Southwest (Region 9) implements and enforces federal environmental laws in Arizona, California, Hawaii, Nevada, the Pacific Islands, and 148 Tribal Nations.
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Topics and Resources
Topics and resources for California-specific projects and programs, including: Desert View Power, Chiquita Canyon Landfill, Havasu Water Company, Kettleman Hills, Central Metal Site Investigation, Cal. Bioresources Alliance Symposia, California Clean Air Technology Initiative (CATI), Tribal Programs, U.S. - Mexico Border, and much more.
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San Francisco Bay Delta Watershed
The San Francisco Bay Delta watershed covers more than 75,000 square miles and includes the largest estuary on the west coasts of North and South America. It also contains the only inland delta in the world.
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U.S.-Mexico Border Program (Border 2025)
The Border 2025 program is a collaborative effort between the United States and Mexico to protect the environment and public health of the nearly 12 million people living along the border.
News, Events and Public Notices
Pacific Southwest Social Media
