OM GIS Maps
O&M has GIS maps that depict the County’s maintained roadways and flood control facilities. These maps are used to monitor and manage maintenance activities and projects. …
Dams
Seven Oaks Dam Seven Oaks Dam is one of the largest earth and rock-filled dams in the world. It is as high as a fifty story building and ten football fields in length from side to side. Situated…
Holiday Schedule
The OC Public Works facilities will be closed on the following Observed 2020 Holidays: * Indicates the observed date differs from the actual date of the holiday. 2020 HOLIDAY…
Office Locations
County Administration South 601 North Ross Street Santa Ana, CA 92701 Click here for directions. Mailing Address: P.O. Box 4048 Santa…
Urban Runoff Diversions
The Pump Station O&M Team is responsible for the operation and maintenance of the County's urban runoff diversions and run off filtration systems. Working with the OCSD to divert urban runoff…
Wellness Centers
Peer Support and Wellness Center Serving: Orange County Adults 18 and olderFacility: County Contracted – College Community ServicesRegion: Countywide Address: 401 S. Tustin St., Bldg. C, Orange CA…
Well Permitting Forms
Click on the icon, in the table below, to download the appropriate file. about downloading files Bulletin for the Destruction of Monitoring Wells and Soil Borings (21.2 KB…
Informational Bulletins
DISCLAIMER: The information contained in the following pages was valid at the time of publication. The County of Orange reserves the right to make changes and improvements at any time and…
Contact Us
Email EH Complaint Form
Prevention Intervention Services
ABOUT THE MHSA In 2004, California voters approved Proposition 63 and the MHSA was enacted in 2005 by placing a one percent tax on personal income above $1 million. It provided the first…