Contact Info

Business Hours

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)

General Questions

Contact Form

Send an Email. All fields with an asterisk (*) are required.