Pay O’fallon Water Bill Online – Quick Payment Guide (2026)

Updated 2026 • Official O’Fallon IL Links

Pay O’Fallon Water Bill Online: Quick Pay, Phone Payment, Auto Pay, Payment Arrangement and Utility Billing Guide

This guide explains how City of O’Fallon, Illinois water and sewer customers can pay online through the official utility billing portal, use Quick Pay without login, pay by phone, request Auto Pay, ask for a payment arrangement, contact Utility Billing and avoid common account-number mistakes.

833
649-1201 phone pay
618
624-4500 ext. 1
7–5:15
weekday office hours
255
S Lincoln Avenue
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Important O’Fallon Utility Billing contacts: Phone payment: 1-833-649-1201. Utility Billing: 618-624-4500 Ext. 1. Email: water@ofallon.org. Emergency phone: 618-624-4545. Office: 255 S Lincoln Avenue, O’Fallon, IL 62269.

01 — Quick Overview

O’Fallon Water Bill Pay Basics: Online Portal, Quick Pay, Phone Pay and Utility Billing Office

The City of O’Fallon, Illinois Utility Billing division handles water and sewer billing, payment options, start/stop service, leak checks and emergency shut-off requests. The official online portal is the Municipal Online Payments utility billing portal.

The portal gives customers two useful choices. Use Quick Pay when you only need to pay a bill and have the account number ready. Use Sign In / Register if you want to view account details, manage single and multiple accounts, use multi-bill pay and set up e-Billing.

The official portal also warns that all payments from the portal are assessed processing fees. Before submitting payment, review the final amount, account number, processing fee and payment method.

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Simple rule: Use Quick Pay for a fast one-time payment, sign in for account management and e-Billing, call 1-833-649-1201 for phone payment, and contact Utility Billing for account problems or service requests.
NeedBest Official MethodWhat To Do
Pay without loginQuick PayOpen the official portal and use your account number.
Manage accountSign In / RegisterCreate an account to manage single or multiple accounts, multi-bill pay and e-Billing.
Pay by phone1-833-649-1201Enter the full account number without the dash.
Need billing help618-624-4500 Ext. 1Call Utility Billing or email water@ofallon.org.
Need service helpUtility Billing ServicesUse start/stop service, leak test/dye strips or irrigation service forms.

02 — Online Payment

How to Pay O’Fallon Water Bill Online Through the Official Portal

The official O’Fallon, IL utility billing portal is hosted by Municipal Online Payments and is used for water/sewer bill payments. It supports Quick Pay and registered account access.

1
Open the official O’Fallon utility billing portal
Use the city-linked Municipal Online Payments page

Start from the City of O’Fallon Utility Billing page or open the official payment portal directly. Avoid unofficial bill-pay pages if they are not linked from the city website.

Official O’Fallon IL utility payment portal: https://www.municipalonlinepayments.com/cityofofallonil/utilities
2
Choose Quick Pay or Sign In / Register
One-time payment or full account management

Use Quick Pay if you simply need to pay your bill and have your account number. Sign in or register if you want to view details, manage single and multiple accounts, use multi-bill pay or e-Billing.

3
Enter your account number carefully
Use the current water/sewer bill

Use the account number from your latest O’Fallon water/sewer bill. If the portal cannot find the account, check every digit and then contact Utility Billing instead of guessing.

4
Review processing fee and final amount
Portal payments are assessed fees

The official payment portal says all payments from the portal are assessed processing fees. Review the final payment screen before submitting.

5
Save confirmation and check posting
Keep proof until account updates

Save the confirmation number, date, account number and payment amount. Keep the receipt until your utility account reflects the payment.

Online payment tip: If you only need to pay quickly, use Quick Pay. If you want payment history, e-Billing and multi-account management, register for portal access.

03 — Phone Payment

Pay O’Fallon Water/Sewer Bill by Phone: 1-833-649-1201

O’Fallon Utility Billing has a phone payment system. The city says to call 1-833-649-1201 and have your account number ready.

Phone payment

Phone: 1-833-649-1201

Use this number to pay your utility bill by phone.

Utility Billing support

Phone: 618-624-4500 Ext. 1

Email: water@ofallon.org

1
Keep your account number ready
The phone system needs your account number

Before calling, keep your utility account number, bill amount, service address and payment method ready.

2
Enter the full account number without the dash
This is the most common phone-payment mistake

The official pay-by-phone instructions say to enter the full account number without the dash. For example, if the bill shows 3995-025, enter 3995025.

Phone payment: 1-833-649-1201 Example: 3995-025 → enter 3995025
3
Save the phone confirmation
Do not end without proof

Write down the confirmation number, amount, account number and payment date. If the payment is urgent, call Utility Billing afterward and ask whether any further action is needed.

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Phone payment tip: If the phone system does not recognize your account, call Utility Billing at 618-624-4500 Ext. 1 instead of repeatedly entering different versions of the account number.

04 — Auto Pay, e-Billing and Account Tools

Set Up O’Fallon Auto Pay, e-Billing and Multi-Account Management

The City’s Payments/Billing page includes Request Auto Pay, and the online portal offers account features such as e-Billing, account details and multi-bill pay for registered users.

Auto Pay request

Use the official Payments/Billing page to access the Request Auto Pay option.

e-Billing

The portal allows registered users to set up e-Billing and manage account notices.

Multi-account management

Useful if you manage more than one O’Fallon utility account or rental property.

Email notifications

The portal encourages customers to sign up for email notifications, including late-payment alerts.

1
Register in the utility portal
Best for long-term account management

Create or sign in to your portal account if you want e-Billing, account details, multi-account management or multi-bill pay.

2
Use the official Auto Pay request option
Confirm setup before relying on it

Use the Request Auto Pay link from the city’s Payments/Billing page. After submitting, keep paying manually until the city or portal confirms Auto Pay is active.

3
Turn on email notifications
Helpful for late-payment warnings

The portal advertises email notifications, including late-payment notices. Make sure your email address is current and checked regularly.

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Auto Pay tip: Auto Pay is helpful, but still review every bill. If your water usage jumps because of a leak, automatic payment may still process the higher amount.

05 — Payment Methods and Account Requests

All O’Fallon Water/Sewer Payment and Billing Options Compared

O’Fallon customers can pay online, pay by phone, request Auto Pay, request payment arrangements and use Utility Billing service forms for start/stop service, leak tests and irrigation water service.

OptionOfficial DetailPractical Tip
Quick PayPay online using your account number without login.Best for quick one-time payment.
Sign In / RegisterManage details, single/multiple accounts, multi-bill pay and e-Billing.Best for regular customers and landlords.
Phone paymentCall 1-833-649-1201 and enter full account number without dash.Good when you cannot access the portal.
Request Auto PayAvailable from the Payments/Billing page.Confirm the first draft before depending on it.
Payment arrangementRequest for Payment Arrangement is listed by the city.Use before the account becomes urgent.
Start/Stop ServiceService forms are available from the Utility Billing services page.Submit early when moving in or moving out.
Leak test / dye stripsCity lists request leak test/dye strips under services.Useful when the bill is higher than normal.
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Payment arrangement tip: If you cannot pay the full balance, use the official payment arrangement route early. Do not wait until the account is already in a shut-off or emergency status.

06 — High Bills, Leak Tests and Emergency Help

O’Fallon High Water Bill, Leak Test and Emergency Shut-Off Help

The City’s Utility Billing page explains that the Water and Sewer Billing Division can set up leak checks on meters and dispatch emergency shut-off requests. This is important if your bill suddenly rises or you suspect a leak.

Emergency phone

Emergency: 618-624-4545

Use for emergency-only after-hours situations.

Leak test / dye strips

Use the city’s Utility Billing services page to request leak test/dye strips.

Billing help

Phone: 618-624-4500 Ext. 1

Email: water@ofallon.org

Irrigation service

O’Fallon lists a Water Services for Irrigation Form under Utility Billing services.

1
Check your home before disputing a high bill
Silent leaks are common

Check toilets, outdoor spigots, irrigation systems, water heaters, softeners and crawlspace areas. Toilet leaks are especially common and may not be obvious.

2
Request leak test or dye strips
Use the official Utility Billing service route

If your bill is higher than normal, request leak test/dye strips through the city’s Utility Billing services page or contact Utility Billing for guidance.

3
Use emergency number only for urgent issues
Normal bill questions should go to Utility Billing

For emergency-only after-hours issues, use 618-624-4545. For normal account questions, payment issues or bill explanations, contact Utility Billing during business hours.

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High-bill tip: Do not just pay a high bill without checking usage. If you find a leak, keep repair proof, dates and photos before contacting Utility Billing.
Insider Tips

Real O’Fallon Water Bill Pay Tips That Save Time and Avoid Account Problems

These practical tips help O’Fallon water/sewer customers avoid wrong account entry, processing fee surprises, late-notice confusion and high-bill stress.

Tip 01

Use Quick Pay only with the bill in hand

Quick Pay is fast, but you need the correct account number. Use the current bill instead of guessing from memory.

Tip 02

Phone payment needs no dash

For phone pay, remove the dash from the account number. Example: 3995-025 becomes 3995025.

Tip 03

Review processing fees

The portal says payments are assessed processing fees. Always review the final screen before submitting.

Tip 04

Register if you manage rentals

The portal supports single and multiple accounts, which is useful for landlords and property managers.

Tip 05

Ask for help early

Use the payment arrangement option before the bill becomes urgent. Waiting too long can reduce your options.

Tip 06

Request dye strips for high bills

The city offers leak test/dye strip request resources. Use them before assuming the meter or bill is wrong.

07 — Office, Phone, Email and Map

O’Fallon Utility Billing Office Address, Phone, Email, Hours and Map

Use the Utility Billing office for account questions, water/sewer billing, payment options, start/stop service, leak test questions, Auto Pay and payment arrangement guidance.

Utility Billing Office

Address: 255 S Lincoln Avenue, O’Fallon, IL 62269

Phone: 618-624-4500 Ext. 1

Email: water@ofallon.org

Office Hours

Monday-Friday: 7:00 a.m.-5:15 p.m.

Call before visiting around holidays or weather closures.

Phone Payment

Pay by phone: 1-833-649-1201

Enter the full account number without the dash.

Emergency Only

Emergency phone: 618-624-4545

Use only for emergency after-hours situations.

City of O’Fallon Utility Billing

255 S Lincoln Avenue, O’Fallon, IL 62269

Use this location for Utility Billing questions and official city service guidance. Confirm current office details before visiting.

Open Map
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Before contacting support: Keep your account number, service address, latest bill, payment confirmation, high-bill details, leak concern, Auto Pay question or payment arrangement request ready.

08 — FAQs

O’Fallon Water Bill Pay FAQs

These answers cover O’Fallon online utility bill payment, Quick Pay, phone payment, Auto Pay, payment arrangements, account numbers, processing fees, Utility Billing support and emergency contacts.

QWhere can I pay my O’Fallon water bill online?

Use the official City of O’Fallon, Illinois Municipal Online Payments utility billing portal for water/sewer bill payment.

QCan I pay O’Fallon water bill without logging in?

Yes. The official portal offers Quick Pay. You need your account number, and no login is necessary.

QWhat can I do after registering in the O’Fallon utility portal?

Registered users can view details, manage single and multiple accounts, use multi-bill pay and set up e-Billing.

QWhat is the O’Fallon IL water bill phone payment number?

Call 1-833-649-1201 and have your account number ready.

QHow do I enter my account number for O’Fallon phone payment?

Enter the full account number without the dash. For example, 3995-025 should be entered as 3995025.

QWhat is the O’Fallon Utility Billing phone number?

Call Utility Billing at 618-624-4500 Ext. 1.

QWhat is the O’Fallon Utility Billing email address?

Email Utility Billing at water@ofallon.org.

QWhere is the O’Fallon Utility Billing office?

The Utility Billing office is located at 255 S Lincoln Avenue, O’Fallon, IL 62269.

QDoes O’Fallon offer Auto Pay or payment arrangements?

Yes. The Payments/Billing page includes Request Auto Pay and Request for Payment Arrangement options.

QAre there processing fees for O’Fallon online utility payments?

The official utility payment portal states that all payments from the portal are assessed processing fees. Review the final payment screen before submitting.

QIs WaterBillsPay.org the official City of O’Fallon website?

No. WaterBillsPay.org is an independent informational guide. Always use official City of O’Fallon or Municipal Online Payments links for payments, fees, account changes and final billing decisions.

Final takeaway: Use the official Municipal Online Payments portal for O’Fallon water/sewer bill payment, Quick Pay for one-time payment, 1-833-649-1201 for phone payment, and 618-624-4500 Ext. 1 or water@ofallon.org for Utility Billing help.

Official Sources

Official O’Fallon Water Bill Pay Links Used for This Guide

Use these official resources for final payment, Quick Pay, phone payment, Auto Pay, payment arrangements, account access, service start/stop, leak tests and customer support.

ResourceOfficial LinkUse It For
Utility Billing PortalMunicipal Online PaymentsQuick Pay, sign in/register, account management, multi-bill pay and e-Billing.
Utility BillingUtility Billing PageOfficial utility billing overview, contact details, assistance resources and service pages.
Payments / BillingPayments/BillingOnline payment, phone payment, Auto Pay request, payment arrangement and bill explanation links.
Pay by PhonePay by PhonePhone payment number and account-number format instructions.
ServicesUtility Billing ServicesStart/stop service, leak test/dye strips and water service for irrigation forms.
Utility Billing PoliciesUtility Billing PoliciesTurn on/shut off policy and starting water/sewer service policy.
City of O’Fallonofallon.orgOfficial city navigation, alerts, public documents, payments and department pages.

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