Here is a list of dumping locations for RV.
Western Propane Service
12600 Western Avenue, Garden Grove, CA 92841
(714) 893-9329
Hours: Monday through Saturday 9 a.m. to 5 p.m. and Sunday from 11 a.m. to 5 p.m.
Newport Dunes Waterfront Resort
1131 Back Bay Drive, Newport Beach, CA 92660
(800) 765-7661
Chevron Station
16725 Pioneer Boulevard, Artesia, CA 90701
(562) 860-5718
Hours: 24 hours
Riverside Water Quality Treatment Plant
5950 Acorn St. Riverside, CA 92504
(951) 351-6140
Hours: Monday through Friday 7 a.m. to 4 p.m., Saturday 9 a.m. to 2 p.m.