City of Ontario Water Bill: Pay Online, Login, Phone Number, Payment Plans and Utility Service Help
City of Ontario utility customers usually need one of a few things quickly: the official water bill payment link, account login, customer service phone number, payment plan help, new service requirements, senior or disabled discount details, or the correct number for a water leak. This guide keeps the official Ontario Municipal Utilities Company payment and customer service resources in one practical place.
Pay online
Use the official City of Ontario customer portal to pay quickly or manage your utility account.
Billing help
Call 909-395-2050 for customer service, billing, account inquiries and payment plan questions.
Payment plans
Ontario offers payment plan options for customers with past-due utility balances.
Water leaks
Call 909-395-2678 for water leaks, open/leaking fire hydrants and missing sewer/drain covers.
Main Official City of Ontario Water Bill Links
How to Pay Your City of Ontario Water Bill Online
The official City of Ontario utility payment portal allows customers to pay quickly, register a new online profile, or login to manage an existing account.
| Payment option | Official detail | Practical action |
|---|---|---|
| Pay Now | The portal asks for the customer number and account number located on your utility bill. | Open Pay Now and keep your bill ready. |
| Login to My Account | Registered users can login with username and password. | Open account login for repeat account management. |
| Register New User | Registration requires customer number details from the utility bill. | Register online if you want portal access. |
| Billing phone support | Customer service, billing and account inquiries use 909-395-2050. | Call if the portal does not accept your details or your account is urgent. |
Start Water, Sewer and Integrated Waste Service in Ontario CA
Utilities Customer Service handles setup for water, sewer and integrated waste services. The exact requirements depend on whether you are a property owner, landlord-authorized tenant, or tenant setting up service.
| Customer type | Required items listed by the City | What to do |
|---|---|---|
| Property owner | Government-issued ID, Social Security Number, proof of ownership if newly purchased within 60 days, and advance payment. | Contact Utilities Customer Service before visiting so documents are complete. |
| Owner authorizing tenant | Landlord Authorization Form, government-issued ID, proof of ownership if newly purchased within 60 days, plus tenant requirements. | Make sure the landlord authorization is completed before the tenant request. |
| Tenant | Government-issued ID, Social Security Number, advance payment, and property owner’s landlord authorization form. | Confirm the owner submitted authorization so service is not delayed. |
| Business / corporation / trust | The City notes additional documentation may be required. | Call 909-395-2050 before submitting documents. |
Ontario Utility Bill Payment Plans and Senior / Disabled Discount
If you have a past-due Ontario utility balance, contact customer service early. The City says payment plan options are available for customers with past-due balances and are designed specifically for past-due amounts.
| Help option | Official detail | Best next step |
|---|---|---|
| Payment plans | Ontario offers several payment plan options for customers with past-due balances. | Call 909-395-2050 and ask about payment plan enrollment. |
| New bills during payment plan | Payment plans do not include new bills issued after the plan is established. | Continue paying new bills separately while paying the payment plan. |
| Senior / disabled discount | Eligible households can receive a monthly discount of up to $15 off the combined water, sewer and refuse utility bill. | Submit the completed application and required supporting documents in person at 1333 S. Bon View Avenue. |
| Questions about discount | The City says customers should contact Utilities Customer Service at 909-395-2050. | Ask what documents prove eligibility before visiting. |
Ontario Water Leaks, Sewer Spill, Fire Hydrant Issues and After-Hours Help
Use the correct phone number depending on the issue. Billing questions go to customer service, but leaks, hydrants, sewer/drain covers and water quality questions use different Municipal Utilities contacts.
| Issue | Official phone number | What to say |
|---|---|---|
| Water leaks | 909-395-2678 | Give nearest address, cross street, visible water flow and whether property or street is affected. |
| Open or leaking fire hydrant | 909-395-2678 | Describe hydrant location, water flow, safety risk and nearby landmark. |
| Missing sewer or drain cover | 909-395-2678 | Report exact location and whether the opening creates traffic or pedestrian danger. |
| Sewer spill emergency | 909-395-2678 | Report immediately and explain if spill is active, inside property, in street or near storm drain. |
| After-hours water needs | 909-986-6711 | Call Ontario PD Dispatch for water-related needs after normal hours. |
Ontario Water Quality, Lead Service Line Inventory and Customer Responsibility
The City says it is committed to safe and reliable drinking water by following federal and state water quality standards. The City also provides lead service line inventory information and water quality resources.
Lead-free city service lines
The City states it used records, improvement projects and field investigations to verify that its water service lines are lead-free.
Shared service line responsibility
The City operates and maintains the pipe from the main water line up to and including the water meter.
Customer-side responsibility
The customer’s responsibility begins after the water meter and continues into the home or building plumbing.
City of Ontario Water Bill Phone Number, Office Address and Map
Use these official contacts for utility billing, account inquiries, payment plans, start service, discount questions, leaks, hydrants, sewer issues and water quality questions.
Utilities Customer Service
Phone: 909-395-2050
Email for required documents: CustomerService@ontarioca.gov
Address: Utilities Customer Service Center, 1333 S. Bon View Avenue, Ontario, CA 91761
Municipal Utilities / emergency contacts
Water leaks, hydrants, sewer/drain covers, water quality: 909-395-2678
After-hours water-related needs: 909-986-6711
OMUC main office: 1425 S. Bon View Avenue, Ontario, CA 91761
Map shows the Utilities Customer Service Center at 1333 S. Bon View Avenue, Ontario, CA 91761. For online payment, use the official City of Ontario customer portal.
Common City of Ontario Water Bill Mistakes That Cause Delays
Most problems can be avoided by using official links, entering the right account details, calling early for payment plans and using the correct number for water leaks instead of only contacting billing.
| Mistake | Why it creates trouble | Better action |
|---|---|---|
| Using unofficial payment pages | Payment may be delayed or connected to confusing third-party processing. | Start from customer.ontarioca.gov or ontarioca.gov. |
| Not having customer and account number | The portal needs bill details to identify the account. | Keep the latest Ontario utility bill nearby before paying. |
| Assuming payment plan covers new bills | The City says payment plans do not include new bills issued after the plan is established. | Pay new bills separately while following the payment plan. |
| Waiting to report a sewer spill | Sewer spills can be urgent public health and safety issues. | Call 909-395-2678 immediately, or 909-986-6711 after hours. |
| Submitting incomplete start-service documents | Required documents must be received before services can start. | Call 909-395-2050 and confirm all required documents before sending. |
City of Ontario Water Bill FAQs
These answers cover common searches about Ontario CA water bill payment, account login, customer service, payment plans, start service, discounts, leaks, after-hours help and water quality.
QHow do I pay my City of Ontario water bill online?
Use the official City of Ontario utility portal at customer.ontarioca.gov. You can use Pay Now for quick payment or login/register to manage your account online.
QWhat information do I need to pay my Ontario water bill?
The official payment portal asks for the customer number and account number located on your utility bill.
QWhat is the City of Ontario utility billing phone number?
For customer service, billing and account inquiries, call 909-395-2050.
QWhere is Ontario Utilities Customer Service located?
The Utilities Customer Service Center is located at 1333 S. Bon View Avenue, Ontario, CA 91761.
QCan I get a payment plan for my Ontario utility bill?
Yes. Ontario offers payment plan options for customers with past-due balances. Call customer service at 909-395-2050 to ask about available plans.
QDoes a payment plan include future Ontario utility bills?
No. The City says payment plans are designed for past-due balances and do not include new bills issued after the payment plan is established.
QHow do I start water service in Ontario CA?
Start service in person at the Utilities Customer Service Center or by phone at 909-395-2050. Required documents must be received before services can start.
QWhat documents are needed to start Ontario water service?
Requirements depend on whether you are a property owner, tenant or authorized tenant. Common requirements include government-issued ID, Social Security Number, proof of ownership when applicable, landlord authorization when applicable and advance payment.
QDoes Ontario offer a senior or disabled utility discount?
Yes. Eligible customers may receive a monthly discount of up to $15 off the combined water, sewer and refuse utility bill through the Disabled Person’s and Senior Citizen’s Discount program.
QWho do I call for water leaks in Ontario?
Call Ontario Municipal Utilities at 909-395-2678 for water leaks, open or leaking fire hydrants and missing sewer or drain covers.
QWho do I call after hours for Ontario water-related needs?
The City says to contact Ontario Police Dispatch at 909-986-6711 for water-related needs after hours.
QWhere can I find Ontario water quality information?
Use the official City of Ontario Water Quality page for drinking water quality information, lead service line inventory details and water quality report resources.
QAre Ontario water service lines lead-free?
The City states it used building records, improvement projects and field investigations to verify that its water service lines are lead-free.
QWhat part of the water service line is the customer responsible for?
The City says OMUC operates and maintains the pipe from the main water line up to and including the meter. The customer’s responsibility begins after the meter and continues into the home or building.
QIs Water-Department.org the official City of Ontario website?
No. This is an independent guide. Official payments, account service, service setup, payment plans, discounts, water quality questions and emergencies must be handled through the City of Ontario and Ontario Municipal Utilities Company.
Official Sources for City of Ontario Water Bill Customers
Use these official resources for final confirmation before paying, registering, starting service, asking for payment plans, reporting leaks or checking water quality.
| Official source | Use it for | Open |
|---|---|---|
| Pay Water Bill Portal | Online water bill payment and account access. | Open portal |
| Pay Now | Quick utility bill payment using customer number and account number. | Open Pay Now |
| Login / Manage Account | Registered customer login and account management. | Open login |
| New User Registration | Registering online access to your utility account. | Open registration |
| Municipal Utilities Company | Main OMUC information, department address, office hours, water resources and official announcements. | Open OMUC |
| Customer Service | Billing, payment plans, service setup, required documents, senior/disabled discount and rates. | Open customer service |
| Contact Municipal Utilities | Phone directory for billing, leaks, water quality, sewer spills, backflow, after-hours contact and emergency reporting. | Open contact page |
| Water Quality | Drinking water quality, lead service line inventory and water service line responsibility information. | Open water quality |
| Report an Issue | General City service issue reporting when applicable. | Open report portal |