The Costa Mesa Sanitary District was formed in 1944 under the Sanitary District Act of 1923. The District boundaries encompass all of the City of Costa Mesa and portions of Newport Beach and unincorporated Orange County. The population is approximately 116,700.
The District is responsible for residential trash collection and transmittal to a recycling facility for recycling and disposal. The District also provides liquid waste collection and transmission to Orange County Sanitation District facilities for treatment and disposal.
