Contact PrimeWash Express If you have any questions, comments about our service or orders contact us. We’d love to hear from you! Upland Location: 820 W Foothill Blvd. Upland, CA 91786 (909) 949-9079 Email Us upland@primewashexpress.com Ontario Location 191 E. Holt Blvd. Ontario CA 91761 Email Us ontario@primewashexpress.com