The Orange County’s Sanitation District has an extensive history that has made it what it is today. On June 9, 1954, we began official operations as the County Sanitation District of Orange County. This year, marks 70 years of hard work, dedication and prosperity that has allowed OC San to transcend its role well beyond a wastewater treatment plant, but as an essential resource recovery facility that recycles water, produces energy, and creates nutrient-rich organic matter.

With a workforce of over 600 employees serving 2.6 million people in central and northwest Orange County, we remain committed to protecting the public health and the environment through effective wastewater treatment and recycling.

Let’s celebrate 70 remarkable years throughout 2024!

Stay tuned for more on our rich history and the community celebration we have planned for this summer.