Pacific Southwest, Region 9
Serving: Arizona, California, Hawaii, Nevada, Pacific Islands, Tribal Nations
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State and Local Partnerships
All States in Region 9 and the Navajo Nation have been delegated primary enforcement responsibility for administering the federal drinking water program as provided for under federal SDWA. The links on this page will provide you with additional information on delegated state/tribal drinking water programs in Region 9 (excluding American Samoa).
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