Monday - Thursday
7:30 a.m. to 4:30 p.m.
Every other Friday (by appointment only)
7:30 a.m. to 3:30 p.m.
See Calendar for Friday closures.
Costa Mesa Sanitary District
290 Paularino Avenue
Costa Mesa, CA 92626
During Business Hours: (949) 645-8400
After-hours Sewer Emergencies: (949) 645-8400 (Dial 6)