The Costa Mesa Sanitary District maintains a 224 mile wastewater (sewer) collection system that collects and transmits wastewater to Orange County Sanitation District facilities for treatment and disposal. To learn more about the various aspects of our sewer system and services, please explore the topics below.

AI Manhole Management

As-Builts & Atlas

Fats, Oils, & Grease (FOG)

Permits

Pump Station Artwork

Rebates

Robin Hamers Yard

Sewer Rate Study

Sewer System Information

Sewer FAQs