Regulatory BackgroundThe California State Water Resource Control Board and the nine Regional Water Quality Control Board (RWQCB), through the Clean Water Act, help address water pollution by…

These reports, prepared as part of the Reports of Waste Discharge (ROWDs) submitted near the end of 4th term MS4 Permits for Orange County, represents a commitment to present a…

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Below is the Santa Ana Regional Board jurisdictional Stormwater Program Effectiveness Assessment (PEA) for the County of Orange/Orange County Flood Control District (County), for the 2017-18…

In an effort to provide the public with a straightforward method to retrieve information a Document Database Library was created. This library is a search tool to find documents, reports or…

* Please note that the reports below are prepared on behalf of municipalities within the Santa Ana Region Water Quality Control Board jurisdiction of Orange County. For reports on progress…

OC Environmental Resources oversees a wide array of programs designed to assess the condition of the surface water environment in Orange County. The OC Monitoring and Data Assessment division manages…

Preventing the discharge of pollutants to receiving waters is essential to protecting designated beneficial uses. In order to maintain the chemical, physical, and biological integrity of Orange…

WORKING FOR ORANGE COUNTYOC Watersheds protects public health and safety, promotes environmental quality, and sustains business competitiveness through education, regulation and collaborative…

 The laboratory identification of plant pests not known to occur in California provides the basis for much of the regulatory enforcement of plant quarantine regulations within Orange County. In…