Fairfield Municipal Utilities Bill Help for Online Payment, Cash Kiosk, Late Fees and Leak Issues
This guide helps Fairfield, California customers pay a water/sewer bill, register for MyFMU, use the 24/7 JACK kiosk, avoid drop-box mistakes, handle a past-due notice, request leak help, or check refund and conservation options.
Every step below includes the official City of Fairfield action link, phone number, address, or payment rule beside the task, so the page works like a practical utility-billing desk instead of a long generic article.
Fast answer: Fairfield Municipal Utilities customers can pay online through MyFMU by SilverBlaze, pay by phone at 866-207-6045, pay cash with a printed barcode at Fairfield 7-Eleven/CVS locations or the City Hall JACK kiosk, mail/drop a check to City of Fairfield, 1000 Webster Street, Fairfield, CA 94533, or use the blue water-payment drop box near the Webster Street parking lot in front of the Police building.
Important: the city says utility bills are due upon receipt and become past due if not paid by the delinquent date. A 10% delinquent fee is added when past due, then an additional 0.5% monthly processing fee may be charged if unpaid. If service is interrupted, Fairfield lists a $25 non-payment processing fee or $35 after working hours.
Fairfield Water Bill Quick Facts
Fairfield Water Bill Action Board: Click the Right Official Step
Start here if you are in a hurry. Each card gives one problem, the practical next step, and the official action link.
I want to pay online
Use MyFMU by SilverBlaze. You can pay, check balances, compare bills, monitor usage, set AutoPay, and request paperless billing.
Open MyFMUI want to pay by phone
Call 866-207-6045 and have your account number and payment method ready.
Call 866-207-6045I need to pay cash
Take the physical bill with printed barcode to Fairfield 7-Eleven, CVS, or the City Hall JACK kiosk. City Hall kiosk has no convenience fee; 7-Eleven/CVS add one.
Cash payment rulesI am late or got a notice
Check the delinquent date. A 10% fee applies when past due, and unpaid bills can move toward shutoff notice and processing fees.
Read past-due policyI think I have a leak
Use MyFMU usage monitoring, check toilets/irrigation, then request a leak adjustment if the issue fits the city process.
Leak adjustment pageI need help paying or a refund
Check the Low Income Senior/Disabled Water Refund rules. Applications for the 2025 refund year are accepted January 1 through May 31, 2026.
Refund eligibilityHow to Use MyFMU for Fairfield Water Bill Payment
MyFMU is the city’s main online utility portal. It is more than a payment button: it helps users spot usage changes before a leak becomes expensive.
Pay online
Register or log in through MyFMU to check balance and pay the utility bill online.
Open MyFMU portalCompare bills
MyFMU includes bill comparison so customers can compare the current bill with previous billing cycles.
See MyFMU featuresMonitor usage
Usage monitoring can show unusual water consumption patterns that may indicate a leak.
Read portal detailsFairfield Payment Options: Cash, Check, JACK Kiosk, Phone and Drop Box
| Payment method | Official detail | What users should do | Official action |
|---|---|---|---|
| Cash at 7-Eleven/CVS | Use the printed barcode on the physical bill. A convenience fee is added by 7-Eleven or CVS. | Bring the physical bill; do not rely on account number only. | Cash rules |
| Cash at City Hall JACK kiosk | The City Hall payment kiosk outside City Hall is open 24/7, and the city says no convenience fee is added there. | Use this when you need a cash option without the store convenience fee. | See City Hall map |
| Check by mail | Mail using the envelope provided to City of Fairfield, 1000 Webster Street, Fairfield, CA 94533. | Mail early; do not use mail for urgent delinquent-date problems. | Mail instructions |
| Blue utility drop box | Located along the curb in the center of the Webster Street parking lot in front of the Police building. Payments before 7am post same business day. | Use the blue water-payment box, not the US Postal mailbox. Do not put cash in the drop box. | Drop-box note |
| JACK kiosk check/card | Payment at the City Hall kiosk posts immediately to the account. | Use the kiosk when posting speed matters more than mailing or drop-box timing. | Watch JACK tutorials |
| Phone payment | Call 866-207-6045 with account number and payment method ready. | Keep the confirmation number and payment amount. | Call phone pay |
Past-Due Fairfield Water Bill: Delinquent Fee, Shutoff Notice and Service Restoration Cost
Due upon receipt
The utility bill is due upon receipt and becomes past due if unpaid by the delinquent date on the bill.
Past due policy10% delinquent fee
A delinquent fee of 10% of the balance due is added when the bill becomes past due.
Verify fee0.5% monthly processing
If the bill remains unpaid, the city says an additional 0.5% per month processing fee will be charged.
Read policy$25 / $35 interruption fee
If service is interrupted for non-payment, an additional processing fee is added: $25, or $35 if the request occurs after working hours.
Shutoff infoCall script for a past-due Fairfield water bill
For billing help, call Customer Service Representatives at 707-428-7346.
AutoPay, Card Fees and the 5-Day Manual Payment Warning
AutoPay in MyFMU
After setting up your online account, you can set up AutoPay and request paperless billing.
Set up MyFMUCard AutoPay fee
The city says a $2.95 per-payment processor fee applies when registering for AutoPay using a credit or debit card.
Read card-fee noteNo fee listed for ACH/check/cash
The city says payments via ACH, check, or cash will not incur that fee.
Compare optionsStart Fairfield Water and Sewer Service
If you are moving into a Fairfield service address, start with the official Start Utility Service application. After service is established and you receive your account number, set up MyFMU for online payments, AutoPay, paperless billing, and usage monitoring.
Open the official application
Use the city-linked Start Utility Service application for new service.
Start utility serviceWait for the account number
The city says online bill pay can be set up after service is established and you receive the account number.
Water & Sewer ServicesCreate your MyFMU account
Register in MyFMU to manage payments, paperless billing, AutoPay, balances, and consumption history.
Register on MyFMUSave the first bill
Your physical bill is useful for barcode cash payment at stores or JACK kiosk, and for account verification if you call.
Ask billing helpHigh Fairfield Water Bill? Use MyFMU, Then Check for Leaks
Fairfield’s MyFMU portal helps customers see usage patterns. The city’s conservation page also says meter upgrades provide data logging and automatically analyze use patterns to see if there are leaks.
Use MyFMU first
- Compare this bill with previous cycles.
- Look for abnormal winter or overnight usage.
- Check whether usage rose, not only the dollar amount.
- Save screenshots before calling.
Check inside the home
- Toilet flapper leaking silently.
- Faucet, shower, or tub drip.
- Water heater leak.
- Ice maker, humidifier, or softener line.
Check outside
- Sprinkler timer changed.
- Broken irrigation head.
- Hose left on.
- Wet soil near service line or meter area.
Request leak adjustment
If you repaired a qualifying leak, use the city’s leak adjustment request page and keep repair proof.
Leak adjustment requestReport water leak or water waste
For water issues, call Public Works Operations at 707-428-7485. After-hours leak emergency: police non-emergency 707-428-7300. For water waste, email waterconservation@fairfield.ca.gov or call 707-428-7630.
Water conservation pageLow Income Senior/Disabled Water Refund: Who Should Check It?
This is not a normal bill discount for every customer. Fairfield lists specific eligibility rules for the Low Income Senior/Disabled Water Refund.
Application window
Applications are accepted from January 1, 2026 through May 31, 2026.
Open refund pageIncome rule
Combined annual gross household income must be less than $54,950 for the preceding calendar year, 2025.
Check income ruleCustomer/account rule
You must have been a Fairfield Municipal Utilities customer for all 12 months of 2025 and the account must be in your name.
Ask Utility Billing| Requirement | What Fairfield says | What to prepare |
|---|---|---|
| Head of household | Claimant must be head of household, single individual, husband, or wife if joint return is filed. | Tax/household information. |
| Age or disability status | Age 62+ by March 1, 2025; or 100% disabled; or veteran receiving non-service-connected disability pension. | ID, disability award letter, or VA pension award letter if applicable. |
| Only one refund | No other refund application can be made for the same calendar year. | Confirm no duplicate household application. |
Fairfield Conservation Tools That Can Lower Future Bills
Free conservation kit
Fairfield water customers can request a free kit on a first-come, first-served basis, limit one per household. Items may include hose nozzle, faucet aerators, moisture meter, toilet leak tablets, and shower timer.
Residential conservationRequest kit
Call the Water Conservation Program at 707-428-7630 or email conserve@fairfield.ca.gov.
Email conserve@fairfield.ca.govReport water waste
Email waterconservation@fairfield.ca.gov or call 707-428-7630 with address/location, date, time, and helpful details.
Report water waste2026 Fairfield Water Rate Context: Why Some Bills May Change
Effective date
Fairfield’s Prop 218 water-rate page lists new rates taking effect January 1, 2026.
Open rate pageWhy rates matter
The city says water-system work includes critical valve replacements, aging service replacements, and treatment-plant modernization.
Read project contextRate questions
For Prop 218 Water Rates questions, Fairfield lists Public Works at 707-428-7485.
Call Public Works10 Fairfield Water Bill Attributes With Practical Answers
| Attribute | Answer | Best action |
|---|---|---|
| Official online payment portal | MyFMU by SilverBlaze. | Log in / register |
| Phone payment number | 866-207-6045. | Call phone payment |
| Billing support number | 707-428-7346. | Call billing help |
| Cash payment requirement | Physical bill with printed barcode required for 7-Eleven/CVS/JACK cash payment. | Read cash rules |
| City Hall kiosk | JACK kiosk outside City Hall, open 24/7; no convenience fee at City Hall kiosk. | Use map |
| Drop box posting | Drop-box payments before 7am post the same business day. | Confirm drop-box rules |
| Returned payment fee | $25 added if a check or automatic payment is returned. | Replace with cash, cashier’s check, money order, or credit card. |
| Past-due fee | 10% of balance due if not paid by delinquent date. | Check past-due policy |
| Leak help | Use MyFMU usage patterns and the city leak-adjustment request page. | Request leak adjustment |
| Refund help | Low Income Senior/Disabled Water Refund may help qualifying customers. | Check refund rules |
Official JACK Payment Tutorial Video
The City of Fairfield links official YouTube tutorials for using the JACK payment kiosk. The cash-payment video is embedded below because it is directly useful for customers who need to pay with a printed bill barcode.
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Fairfield City Hall Map and Payment Visit Plan
Use this map for the City Hall JACK kiosk, mailing/drop-box location, and in-person planning around 1000 Webster Street, Fairfield, CA 94533.
Bring
Physical bill, printed barcode if paying cash, account number, payment method, and any past-due or shutoff notice.
For drop box
Use the blue water-payment drop box near the Webster Street parking lot in front of the Police building. Do not use cash.
For faster posting
The city says kiosk payment posts immediately; drop-box payments before 7am post the same business day.
Official Fairfield Utility Links Used in This Guide
Fairfield Water Bill FAQ
How do I pay my Fairfield CA water bill online?
Use the official MyFMU by SilverBlaze portal. After your service is established and you receive an account number, you can register, pay online, set up AutoPay, request paperless billing, monitor usage, and compare bills.
What is the Fairfield water bill phone payment number?
Call 866-207-6045 and have your payment method and account number ready.
What number do I call for Fairfield utility billing help?
For Customer Service Representatives, call 707-428-7346.
Can I pay my Fairfield water bill with cash?
Yes. Take the physical bill with printed barcode to Fairfield 7-Eleven stores, CVS, or the 24/7 City Hall JACK kiosk. A convenience fee is added by 7-Eleven or CVS, but the city says no convenience fee is added at the City Hall kiosk.
Where do I mail a Fairfield water bill payment?
Mail the payment using the envelope provided to City of Fairfield, 1000 Webster Street, Fairfield, CA 94533.
Where is the Fairfield water bill drop box?
The blue drop box marked for water payments is along the curb in the center of the Webster Street parking lot in front of the Police building. Do not use the US Postal mailbox, and do not put cash in the drop box.
When do Fairfield drop-box payments post?
The city says payments made at drop boxes before 7am post the same business day. Payment at the City Hall JACK kiosk posts immediately to the account.
What happens if my Fairfield utility bill is past due?
A 10% delinquent fee is added if the bill is not paid by the delinquent date. If the bill remains unpaid, an additional 0.5% monthly processing fee may be charged and a shutoff notice may be mailed.
What is the returned payment fee?
If a check or automatic payment is returned for any reason, Fairfield adds a $25 fee. The returned payment must be replaced by cash, cashier’s check, money order, or credit card.
How do I report water waste or a leak in Fairfield?
For water issues, call Public Works Operations at 707-428-7485. For after-hours or weekend water leak emergencies, call police non-emergency at 707-428-7300. To report water waste, email waterconservation@fairfield.ca.gov or call 707-428-7630 with location, date, time, and details.