Welcome to the California Regional Water Quality Control Board, Central Valley Region Welcome to the California Environmental Protection Agency
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NOTICE - Our Website will undergo maintenance on 5:00 pm, Friday, April 24, 2015 through the weekend. During this time, all Water Board resources, including databases, email & listservs will not be available. We apologize for this inconvenience. Please check back on Monday, April 27, after 8:30 am.