Alternative channels
Mail, text, and in-person payment instructions
Pay by text
A dedicated this detail was not publicly posted. . Ontario’s official payment page provides online account lookup and payment options but does not publish a text-to-pay keyword, SMS short code, or enrollment flow. Customers should not infer that the City’s Ask Ontario digital assistant or email alerts are bill-payment texting without a direct portal prompt.
Mail-in address
A dedicated this detail was not publicly posted. In the reviewed current 2026 customer-service and payment pages. Ontario directs customers to the live account portal, in-person Utilities Customer Service Center, and the City’s customer-service line; use the payment address printed on the current utility bill or confirm it with (909) 395-2050 before mailing a check or money order.
Counters, drop boxes, and office hours
Utilities Customer Service Center, 1333 S. Bon View Avenue, Ontario, CA 91761, is the location for starting service, submitting required documents, and customer-service assistance. OMUC’s administrative office is 1425 S. Bon View Avenue, Ontario, CA 91761, with Monday–Thursday hours of 7:30 a.m.–5:30 p.m. and Friday hours of 7:30 a.m.–4:30 p.m.; customer-facing payment-counter hours should be confirmed with 909-395-2050. City Hall is at 303 East B Street and the City Hall Annex at 200 N. Cherry Avenue. The reviewed current pages do not publish a separate drop-box location or accepted counter instruments.