Pay your City of Ontario, California water bill online using this service.
Service will be reconnected only after the account balance and all fees are paid. Please call the Ontario Municipal Utilities office number listed above to speak to a customer service representative during regular business hours, Monday through Thursday (7:30 a.m. to 5:30 p.m.) or Friday (8:00 a.m. to 5:00 p.m.).
Ontario City water bill is due and payable upon receipt. The bill becomes delinquent if not paid within 26 days from the bill date.
You can mail your payments in the form of a check or a money order to:
City of Ontario Revenue Services Department
1333 S. Bon View Avenue
Ontario, CA 91761
City of Ontario water bills are issued to all its customers on a monthly basis.