Fullerton Utility Billing Help for Online Payments, Customer ID Changes and High Bills
Use this page if you need to pay a City of Fullerton water bill, register for Citizen Self Service, understand the new customer ID format, use the 24/7 payment line, mail a check to the correct new address, or call Utility Services before a past-due bill becomes a shutoff problem.
Every action below includes the official Fullerton link, phone number, address, or local rule beside the step, so you can pay safely and fix common billing problems without searching again.
Fast answer: Fullerton water customers can pay online through Citizen Self Service, pay by the 24/7 virtual payment line at 877-768-8795, pay in person at City Hall, 303 W. Commonwealth Ave., 1st Floor Central Cashier, Fullerton, CA 92832, or mail a check to City of Fullerton, PO Box 45850, San Francisco, CA 94145-0850. For billing, start/stop service, disconnection-risk, or account help, call Utility Services at 714-738-6890.
Important login rule: the City says the account number remains the same, but the customer identification number changes. Example: if the old customer ID was 0123456, use 9123456 by replacing the leading 0 with 9.
Fullerton Water Bill Quick Facts
Fullerton Water Bill Action Board: Click the Right Official Step
Start here if you are in a hurry. Each action has the exact official link, phone number, or local payment detail beside it.
I need to pay online
Use Fullerton’s Pay Utility Online page and sign in through Citizen Self Service after registering your account.
Open pay pageI need login instructions
Use the Billing Information page for the step-by-step sign-up, email verification, account linking, and customer-ID change instructions.
Open billing stepsI want to pay by phone
Call the 24/7 virtual payment line at 877-768-8795. Have the new account number and customer number ready.
Call 877-768-8795I need billing help
Call Utility Services at 714-738-6890 for start/stop service, service at risk for disconnection, disconnected service, or other questions.
Call 714-738-6890My bill is unusually high
Use the City’s leak detection steps: check visible leaks, flow indicator, private shutoff valve, irrigation valve, and sprinkler heads.
Open leak stepsI need to start or stop service
Call 714-738-6890. Start service requires deposit, and termination requests must be made by phone; email requests are not accepted.
Start / stop rulesHow to Pay a Fullerton Water Bill Online
Fullerton’s online utility payments use Citizen Self Service. The City says online utility payments are currently posted in real time and there is no additional charge to make a payment.
Open Pay Utility Online
Start from the City of Fullerton Pay Utility Online page, not a sponsored search ad or copied payment link.
Open official pageCreate your CSS login
Choose Sign Up, enter your name and email, then open the verification email and activate the account.
See signup stepsLink your utility account
Under Utility Billing Services, enter your account number and customer ID. Replace a leading 0 in the old customer ID with 9.
Customer ID guidePay by card online
The City says online payments can be made by credit card only: Visa, MasterCard, or Discover. eCheck is not accepted online.
Pay onlineFullerton Customer ID Change: How to Enter It Correctly
| Field | Official rule | What to enter | Common mistake |
|---|---|---|---|
| Account number | The account number remains the same. | Use the account number from your utility bill. | Changing the account number when only customer ID changed. |
| Old customer ID | The customer identification number changes. | If old ID started with 0, replace that first 0 with 9. | Typing 0123456 instead of 9123456. |
| Full account number | Important billing info says to enter the full 8-digit account number including leading zeros. | Do not drop leading zeros if the field requires the full account number. | Removing zeros because the customer ID rule mentioned changing 0 to 9. |
| Full customer ID | Important billing info references a full 7-digit customer ID. | Use the full ID after the required leading-digit change. | Entering only the last few digits. |
| Email login | You must verify the email before using the account. | Check inbox and spam for the activation email. | Trying to link the account before activation. |
Pay by Phone: Fullerton 24/7 Virtual Payment Line
Phone number
Call 877-768-8795 anytime, day or night, to use Fullerton’s virtual payment line.
Call phone paymentWhat to prepare
Have your new account number and customer number ready before calling.
Phone payment detailsPayment method
Fullerton’s pages describe phone payment using credit card and check through the virtual payment system.
Check ID format firstPhone payment checklist
Mail, City Hall, Drop Box and In-Person Payment
Fullerton’s Water Service page warns customers to use the new mailing address immediately and update bank bill-pay records.
| Method | Official detail | Best for | Action |
|---|---|---|---|
| City of Fullerton, PO Box 45850, San Francisco, CA 94145-0850. | Routine check payments with enough mailing time. | Make checks payable to “City of Fullerton.” | |
| Bank bill pay | Update the new mailing address with your bank or bill-pay service. | Customers using bank-scheduled utility payments. | Do not let payments go to the old PO Box. |
| City Hall cashier | 303 W. Commonwealth Ave., 1st Floor Central Cashier, Fullerton, CA 92832. | Payment with questions, receipt need, or account help. | View map |
| Drop box | Located outdoors on the north side of City Hall. | After-hours check drop-off. | Use only when processing delay will not hurt you. |
| In person payment types | City Hall payment center accepts cash, checks, debit and credit cards. | Customers needing direct receipt or staff help. | Visit during posted hours. |
Fullerton AutoPay: Avoid Missed Due Dates
Free checking draft
Fullerton says AutoPay is a free service set up through your checking account.
AutoPay sectionApplication needed
Complete the AutoPay application and mail or bring it to City Hall with a voided check.
Water Service pageDraft date
When enrolled, the bank account is drafted for the amount due on the bill due date.
Mail or bring formPast-Due Fullerton Water Bill or Disconnection Risk
If the bill is already late, do not guess whether online, phone, mail, or drop box will fix it in time. Contact Utility Services and ask about your exact account status.
Call Utility Services first
Fullerton says to contact Utility Services for service at risk for disconnection or disconnected service.
Call 714-738-6890Ask what amount is required
Ask whether the full balance, past-due amount, deposit, reconnection-related amount, or other fee must be paid.
Phone pay optionUse a fast payment path
Online payments post in real time according to the City. For urgent accounts, verify the status after payment.
Pay onlineCheck shutoff policy
The City provides a Water Shutoff Protection Act discontinuation policy in English and multiple languages.
Open policy pagePast-due call script
High Fullerton Water Bill? Use the City’s Leak Detection Steps
Fullerton’s leak page gives a practical test sequence. Use it before assuming the bill is wrong.
Walk the property
Check every water connection in and around the home, hose bibs outside, wet ground, and extra green patches that may show irrigation leaks.
City leak pageTurn off all water use
Make sure faucets, dishwashers, pool fillers, washers, toilets, and sprinklers are off. Check the meter flow indicator.
Flow indicator stepsUse the private shutoff valve
Turn the private shutoff valve off. If the meter still moves, the leak may be between the meter and your home.
Need city valve help?Check irrigation and sprinklers
If no leaks are found inside, turn on sprinklers and check broken heads, watering times, and over-watering.
Watering rulesWhy Some Fullerton Bills Covered More Days in 2024–2025
If a user is searching because an older bill looked unusually high, this official detail matters.
Longer billing period
During the billing-system transition, some late 2024 and early 2025 bills reflected longer-than-usual billing periods.
Understand your billTemporary tier adjustment
The City said it temporarily increased each water usage tier to reduce unexpected charges caused by the longer usage period.
Read city explanationNo rate increase claim
The City stated there was no increase in water rates in 2024; the issue was tied to the billing transition.
Check explanationStart or Stop Fullerton Water Service
| Task | Official rule | What to prepare | Action |
|---|---|---|---|
| Start service | Call Utility Services at 714-738-6890. Representatives can take information by phone. | Name, address, phone, driver’s license, SSN, employment info, emergency contact, landlord info if renting. | Call Utility Services |
| Deposit | Starting service requires a deposit of twice the average monthly bill. | Deposit must be paid before service begins. | Read start-service rules |
| Previously occupied home | City recommends calling at least two business days before service should begin. | Move-in date and service address. | Call early |
| Stop service | Call at least one business day before the desired termination date; email requests are not accepted. | Termination date, forwarding address, phone number. | Read stop-service rules |
| Final bill | City prepares a pro-rated bill and sends it 2–3 weeks after termination date. | Forwarding address and deposit/refund tracking. | Save final bill date. |
Need Water Turned On or Off for Repairs?
Call Public Works
For water meter turn-on or shut-off help, call 714-738-6897.
Water Service & MetersAvoid damaging the meter
The City says property owners are responsible for damage to a meter or valve if they or their worker damages it while turning it on or off.
Call before turning valveTypical crew response
The City says a crew will normally be deployed within about 30 minutes, or you can request an appointment.
Request helpFullerton Water Restrictions, Leak Repair and Conservation
Watering day basics
Fullerton’s conservation FAQ says no watering lawns on Sundays; even addresses water Monday, Wednesday and Friday; odd addresses water Tuesday, Thursday and Saturday.
Conservation FAQNo daytime lawn watering
The FAQ prohibits watering lawns between 9:00 a.m. and 6:00 p.m.
Water restrictionsLeaks must be fixed
Fullerton’s restrictions say leaks and faulty sprinklers must be promptly repaired, with timing depending on conservation level.
Current restrictions10 Fullerton Water Bill Attributes Answered
These are the exact local details Fullerton customers need when paying, calling, starting service, disputing usage, or mailing a check.
| Attribute | Answer | What to do |
|---|---|---|
| Online portal | Citizen Self Service through Pay Utility Online. | Register with email, verify, then link your utility account. |
| Utility Services phone | 714-738-6890. | Use for billing, start/stop, disconnection risk, or account questions. |
| Phone payment | 877-768-8795. | Have the new account number and customer number ready. |
| Office address | 303 W. Commonwealth Ave., 1st Floor Central Cashier, Fullerton, CA 92832. | Use for in-person payment and payment-center help. |
| Mailing address | City of Fullerton, PO Box 45850, San Francisco, CA 94145-0850. | Update bank bill-pay records to avoid late-fee delays. |
| Customer ID rule | Old leading 0 becomes 9; example 0123456 becomes 9123456. | Keep account number the same; change customer ID only as instructed. |
| Online payment method | Credit card only: Visa, MasterCard, Discover. | Do not look for eCheck in the online portal. |
| Online posting | City says payments post in real time and currently have no additional charge. | Still save the receipt and confirmation. |
| Start service deposit | Deposit is twice the average monthly bill. | Pay deposit before service can begin. |
| Leak check | Use flow indicator, shutoff valve, irrigation valve, and sprinkler checks. | Document findings before calling about a high bill. |
Fullerton City Hall Map and Payment Visit Plan
Use City Hall for in-person payment, account questions, drop-box payment, AutoPay form drop-off, or direct help with start/stop service.
Bring
Bill, account number, customer ID, payment method, ID if starting service, and any notice letter.
Ask before leaving
“Is my account current now, and is any payment still pending?”
Use drop box carefully
It is on the north side of City Hall. Do not use it for urgent disconnection-risk payments unless timing is confirmed.
Official Fullerton Water Bill Links
Fullerton Water Bill FAQ
How do I pay my City of Fullerton water bill online?
Use the City’s Pay Utility Online page and Citizen Self Service. Register with an email, verify it, link your account using your account number and customer ID, then pay by Visa, MasterCard or Discover.
What is the Fullerton utility billing phone number?
Call Utility Services at 714-738-6890 for billing questions, start or stop service, disconnection-risk help, disconnected service, Spanish assistance, and general utility account questions.
What is the Fullerton water bill phone payment number?
Call the 24/7 virtual payment line at 877-768-8795. Have your new account number and customer number ready before calling.
Where do I mail a Fullerton water bill payment?
Mail utility billing payments to City of Fullerton, PO Box 45850, San Francisco, CA 94145-0850. Update your bank bill-pay service so payments do not go to the old address.
Where is the Fullerton utility payment office?
The payment center is at Fullerton City Hall, 303 W. Commonwealth Ave., 1st Floor Central Cashier, Fullerton, CA 92832.
Where is the Fullerton utility payment drop box?
The payment drop box is located outdoors on the north side of City Hall. Use it for routine after-hours payments, not urgent disconnection-risk payments unless timing is confirmed.
Why is my Fullerton customer ID not working online?
The account number remains the same, but the customer ID changed. If your old customer ID started with 0, replace the leading 0 with 9. For example, 0123456 becomes 9123456.
Can I pay a Fullerton utility bill online by eCheck?
No. The City says online utility payments can be made by credit card only: Visa, MasterCard or Discover. eCheck payments are not accepted through the online portal.
How do I start water service in Fullerton?
Call Utility Services at 714-738-6890. Starting service requires customer information and a deposit of twice the average monthly bill. The City recommends calling at least two business days before service should begin for a previously occupied home.
Why is my Fullerton water bill higher than expected?
Check the billing period dates, water usage, meter flow indicator, toilets, faucets, hose bibs, irrigation, wet ground, sprinkler heads and outdoor watering. Fullerton’s leak detection page gives a step-by-step test before you call about a high bill.