Ontario Utility Bill & Leak Help
Use this page when you need the official City of Ontario water bill portal, Pay Now route, customer service phone, start-service checklist, payment plan help, senior/disabled discount, leak number, sewer spill contact, after-hours water help, rates, or water quality resources.
Short path: pay through customer.ontarioca.gov, call 909-395-2050 for billing, call 909-395-2678 for water leaks or sewer spills, and use 909-986-6711 after hours for water-related needs.
Fastest Answer for Each Ontario Water Bill Task
Use the City of Ontario customer portal for utility bill payment and account access.
Open Pay Water BillUse Pay Now with the customer and account numbers printed on your bill.
Open Pay NowCall Utilities Customer Service at 909-395-2050 before service interruption risk grows.
Customer ServiceCall 909-395-2678 during OMUC hours; after hours call 909-986-6711.
Contact OMUCOfficial Ontario Water Bill Routing
| User need | Correct official route | Have ready | Important warning |
|---|---|---|---|
| Pay water/sewer/refuse bill online | Pay Water Bill portal | Customer number, account number, service address, payment method. | Start from OntarioCA.gov or customer.ontarioca.gov, not random third-party payment pages. |
| Quick payment | Pay Now | Customer number and account number from the utility bill. | Confirm service address and account name before submitting. |
| Billing, start service, payment plan | Utilities Customer Service: 909-395-2050. | Bill, customer/account number, ID, service address, documents if starting service. | Payment plans are for past due balances, not new bills issued after the plan starts. |
| Water leak, hydrant leak, missing sewer/drain cover | OMUC contact route: 909-395-2678. | Exact location, cross street, issue type, callback number. | Use after-hours dispatch for water-related needs outside OMUC hours. |
| Sewer spill | Call 909-395-2678 during hours; after hours call 909-986-6711. | Location, whether sewage is entering street, storm drain, yard, home or business. | Report immediately; call 911 first for life-safety danger. |
| Water quality or lead service line question | Water Quality page or 909-395-2678. | Address, water concern, photos if relevant, service line question. | City side and customer side service line responsibility are different. |
How to Pay a City of Ontario Utility Bill Online
Open the official payment page
Start with customer.ontarioca.gov. The City header and OMUC pages link customers to this payment portal.
Choose account login or Pay Now
Use account login if you manage the account regularly. Use Pay Now for a faster one-time payment using the customer and account numbers from the bill.
Match account details
Before paying, verify service address, customer/account number, bill amount and any past due notice.
Save proof
Keep confirmation number, date, amount, payment method and screenshot. If your account is past due, call 909-395-2050 after payment.
Ontario Water Phone, Address and Office Hours
Billing / account
909-395-2050. Use for customer service, billing, starting service, payment plans and discount questions.
Customer Service Center
1333 S. Bon View Avenue, Ontario, CA 91761. Use for billing, account setup and service documents.
OMUC office
1425 S. Bon View Avenue, Ontario, CA 91761. Phone: 909-395-2600.
OMUC hours
Monday–Thursday 7:30 AM–5:30 PM. Friday 7:30 AM–4:30 PM.
Start Ontario Water, Sewer and Integrated Waste Service
Property owner
- Government-issued ID.
- Social Security Number.
- Proof of ownership if newly purchased within 60 days.
- Advance payment.
Tenant
- Government-issued ID.
- Social Security Number.
- Advance payment.
- Property owner must complete landlord authorization.
Send documents
Required documents must be received before services start. The City says documents can be emailed to CustomerService@ontarioca.gov.
Payment Plans and Senior / Disabled Discount
Payment plan for past due balance
Ontario offers payment plan options for customers with past due balances. Call 909-395-2050 to enroll.
Disabled / senior discount
Qualified households can receive a monthly discount of up to $15 off the combined water, sewer and refuse utility bill.
Ontario Water Leaks, Sewer Spills and After-Hours Help
Water leak / hydrant leak
Call 909-395-2678 for water leaks, open/leaking fire hydrants, missing sewer/drain covers and water quality questions.
Sewer spill
Report sewer spills immediately. Call 909-395-2678 during OMUC hours.
After hours
For water-related needs after hours, call Ontario PD Dispatch at 909-986-6711.
What to tell OMUC when reporting a leak or spill
- Exact address or nearest cross street.
- Issue type: water leak, hydrant leak, missing cover, sewer spill or drain issue.
- Whether water or sewage is entering a street, yard, home, business or storm drain.
- Whether the issue appears on private property or public right-of-way.
- Your name and callback number.
- Any traffic, public health or safety risk.
Ontario Water, Sewer and Service Rates
Rates were implemented on November 1, 2025. The rate sheet uses HCF, where 1 HCF equals 748 gallons.
| Rate item | Official amount | What it means for users |
|---|---|---|
| Residential potable water use: 1–10 HCF | $2.44 per HCF | First residential water usage block. |
| Residential potable water use: 11–18 HCF | $4.55 per HCF | Higher usage block after first 10 HCF. |
| Residential potable water use: more than 18 HCF | $5.39 per HCF | Highest listed residential usage block. |
| Monthly RTS, 5/8″ potable meter | $31.64 | Common base readiness-to-serve charge before usage. |
| Monthly RTS, 3/4″ potable meter | $42.36 | Base charge for a larger residential meter. |
| Single-family sewer base / City charge | $14.63 | City sewer base portion for a single-family dwelling unit. |
| Single-family IEUA sewer charge | $27.02 | IEUA sewer charge shown separately on the rate sheet. |
| Same-day water on before 3:30 PM | $54.00 | Service fee for same-day water turn-on before 3:30 PM. |
| Same-day water on after 3:30 PM | $108.00 | Higher fee after 3:30 PM. |
| Broken meter lock | $145.00 | Fee users should avoid by not tampering with meter locks. |
| Meter tampering | $675.00 | Serious fee for tampering with water service equipment. |
What an Ontario Utility Bill Can Include
Water use
Usage is measured in HCF. One HCF equals 748 gallons.
RTS base charge
Monthly readiness-to-serve charge varies by meter size.
Sewer
Single-family and multi-family sewer charges show City and IEUA components.
Integrated waste
Refuse, recycling, green waste, bins or cans can affect the combined utility total.
High Ontario Water Bill: Quick Leak and Usage Check
Silent toilet leak
Check toilets first. A flapper leak can run for weeks and show up as a sudden water-use jump.
Irrigation or outdoor use
Check sprinkler heads, hose bibs, outdoor timers, pool filling, pressure valves and wet soil.
Bill line review
Separate water usage, sewer, integrated waste, fees, payment-plan items and past due balance.
Compare HCF, not just dollars
Check whether usage moved from 1–10 HCF into higher tiers like 11–18 HCF or more than 18 HCF.
Check meter and private plumbing
If all water is off and the meter appears to be moving, you may have a private-side leak after the meter.
Document repair proof
Save photos, plumber invoice, hardware receipt, repair date and meter readings if you find a leak.
Call the right number
For billing review, call 909-395-2050. For visible leaks, water quality or sewer spill issues, call 909-395-2678.
Ontario Water Quality and Service Line Responsibility
Lead-free public side
The City says it ensures service lines on the public side are made from lead-free materials.
Customer side starts after meter
OMUC maintains the pipe from the main line up to and including the water meter. Customer responsibility begins after the meter.
Inventory work
OMUC used records, field checks, scratch tests and photos around meter boxes to classify service line materials.
Local Ontario Tips That Prevent Utility Problems
Do not mix up addresses
Customer Service billing address is 1333 S. Bon View Avenue. OMUC department address is 1425 S. Bon View Avenue. Use the right one for your task.
Payment plan means old balance only
If you start a payment plan, keep paying new monthly bills separately. The City states new bills are not included in the established payment plan.
Tenants need owner authorization
Tenant service setup requires landlord authorization. Do not wait until moving day to collect the form.
HCF can hide a big usage jump
One HCF is 748 gallons. A small-looking change in HCF can mean thousands of gallons over a bill cycle.
Ontario Utility Bill Problem Solver
| Problem | Likely reason | Fast fix |
|---|---|---|
| Pay Now cannot find account | Customer number, account number or service address mismatch. | Use the exact numbers from the bill or call 909-395-2050. |
| Past due balance | Late bill, old balance, payment plan issue or payment posting delay. | Call 909-395-2050 and ask about payment plan options. |
| Starting service delayed | Missing ID, SSN, proof of ownership, landlord authorization or advance payment. | Email required documents to CustomerService@ontarioca.gov or visit Customer Service Center. |
| Bill suddenly high | Higher HCF, irrigation, leak, sewer, integrated waste, fee or past due balance. | Review line items; check leaks; call 909-395-2050 with bill details. |
| Water leak after hours | Water-related issue outside OMUC office hours. | Call Ontario PD Dispatch at 909-986-6711. |
| Meter lock or service equipment issue | Meter damage, lock damage or tampering risk. | Do not touch utility equipment; call the City. Meter tampering can carry a large fee. |
Ontario Utilities Map and Visit Planning
Use the map for the Utilities Customer Service Center at 1333 S. Bon View Avenue. Verify hours before visiting around holidays or city closures.
Billing / start service
Utilities Customer Service Center, 1333 S. Bon View Avenue, Ontario, CA 91761.
Municipal Utilities
OMUC, 1425 S. Bon View Avenue, Ontario, CA 91761.
Bring
Bill, customer/account number, service address, ID, documents, payment proof and discount application if needed.
Official Ontario Utility Links
Ontario Water Department FAQs
How do I pay my City of Ontario water bill online?
Use the official City of Ontario Pay Water Bill portal at customer.ontarioca.gov. You can also use Pay Now with the customer and account numbers from your utility bill.
What phone number handles Ontario water bill questions?
For billing, account, payment plan and start-service questions, call Utilities Customer Service at 909-395-2050.
Where is Ontario Utilities Customer Service located?
The Utilities Customer Service Center is listed at 1333 S. Bon View Avenue, Ontario, CA 91761.
What is the Ontario Municipal Utilities Company phone number?
The Ontario Municipal Utilities Company office phone is 909-395-2600. For leaks and water quality questions, the City lists 909-395-2678.
What are OMUC office hours?
OMUC hours are Monday–Thursday, 7:30 AM–5:30 PM, and Friday, 7:30 AM–4:30 PM.
Who do I call for an Ontario water leak or sewer spill?
Call 909-395-2678 for water leaks, hydrant leaks, missing sewer/drain covers, water quality questions and sewer spills during OMUC hours. After hours, call 909-986-6711.
Can Ontario utility customers get a payment plan?
Yes. Ontario offers payment plan options for past due balances. Call 909-395-2050. New bills issued after the plan starts must still be paid separately.
Does Ontario offer a senior or disabled utility discount?
Yes. Qualified households can receive a monthly discount of up to $15 off the combined water, sewer and refuse utility bill. Submit the application and supporting documents in person at 1333 S. Bon View Avenue.
How do I start water service in Ontario, CA?
You can start service in person at the Utilities Customer Service Center or by phone at 909-395-2050. Required documents must be received before service starts.
Does this page collect Ontario water bill payments?
No. This is an independent informational guide. Use official OntarioCA.gov and customer.ontarioca.gov links for live payments, account help, leak reporting, rates and emergencies.
Pay Your Water Bill Safely, Fix High Bills, Avoid Shutoff, Start Service and Find Official Utility Links
Use this free USA water bill assistant before paying online, calling utility billing, setting up AutoPay, checking a high bill, requesting leak help, starting or stopping service, handling a past due account, or searching for the official city utility portal.
What water bill problem do you need to solve?
Choose your situation. The tool will suggest the safest route, what to prepare, and which official page or office to check first.
Open the official city, county, water authority or utility website first. Do not enter account details into a random sponsored payment page.
If the bill is unusually high, compare usage, billing days, meter read type, toilet leaks, irrigation, late fees and leak adjustment rules before paying blindly.
Safe Water Bill Payment Route
Choose how you want to pay. This helps users avoid wrong portals, posting delays and urgent shutoff mistakes.
AutoPay / Bank Draft Setup Helper
Use this before enrolling in recurring payments so the first draft, current balance and payment date do not surprise you.
High Water Bill Review
Compare your normal bill and usage with the current bill. This gives a practical path before requesting a high bill review.
Leak Adjustment Proof Checklist
Use this before asking for a leak adjustment, high bill review, sewer adjustment or payment plan.
Past Due, Shutoff Notice and Reconnect Helper
Use this if your bill is late, you received a shutoff notice, service is off, or you need a payment plan.
Start, Stop or Transfer Water Service
Use this before moving, closing an account, starting service, transferring service or requesting a final bill.
Water Bill Cost Estimate
Estimate a simple monthly bill from base charge, water usage, sewer, stormwater, trash, service fees and late charges. Official tiered rates may be different.
Bill Dispute and Meter Reading Checklist
Use this before calling billing support about a meter reading, duplicate payment, wrong address, missing payment, estimated bill, or incorrect charge.
Official Water Bill Portal and Phone Finder
Enter city/utility and state to create safe searches for official water bill pay, phone payment, guest pay, AutoPay, start service, leak adjustment, reconnect, assistance and this site’s guide.
Official portal safety
- Use official city, county, authority or utility websites first.
- Check service address before paying.
- Save confirmation number and screenshot.
- Call the utility for shutoff or reconnect situations.
Best sitewide placement
Place this tool after the first payment section or before FAQs. It turns every water bill article into a practical help page, not only a list of links.
Important note
This tool gives educational guidance only. Always confirm payment portals, fees, shutoff rules, assistance programs, account balance and reconnection steps with the official utility.