How to Pay Your Naperville Utility Bills Online and by Mail

Naperville's online bill pay system and payment methods

The City of Naperville operates a bill pay portal where you can pay water, sewer, and stormwater charges online using a debit or credit card. You access this portal through the city's website at naperville.il.us. The system lets you make a one-time payment or set up automatic recurring payments, and you can view your billing history and account balance before you pay.

If you prefer not to pay online, Naperville accepts payments by mail, phone, and in person at City Hall. Each method has different processing times and fees, so the route you choose affects when your payment reaches the city and whether you incur a transaction charge.

Key Takeaways

• The City of Naperville's online portal accepts debit and credit card payments and shows your account balance and billing history before you submit payment.
• Credit and debit card payments through the online portal incur a convenience fee set by the payment processor, which varies but is disclosed before you complete the transaction.
• Mailed checks should be sent to the address printed on your bill and typically take 7 to 10 business days to post to your account.
• Phone payments and in-person payments at City Hall do not carry a convenience fee, but phone payments may have limited hours depending on the city's staffing.

Paying online through the city portal

To pay online, visit naperville.il.us and locate the bill pay or utilities section. You will need your account number, which appears on your paper bill or in any email notice the city sends. Enter your account number and the amount you wish to pay, then select your payment method: debit card or credit card.

The system will show you the convenience fee before you confirm the payment. This fee is charged by the payment processor, not by the city, and the amount varies depending on the processor's current rate. Once you submit payment, you receive a confirmation number. The city typically posts online payments within one business day, though the exact timing depends on when during the day you submit.

If you want to avoid the convenience fee, you can set up automatic recurring payments directly from your bank account through the city's portal. This option does not charge a fee and deducts money on a schedule you choose. Contact the city's utilities department to confirm whether bank account autopay is available through their current system.

Mailing a check or money order

The mailing address for Naperville bill payments is printed on your bill. Write your account number on the check or money order to may support it posts to the correct account. Mail should be sent to the address listed on your bill, not to City Hall's main address, because utility payments are processed at a separate location.

Mailed payments typically take 7 to 10 business days to reach the city and post to your account. If your bill is due soon, mailing is not the fastest option. To avoid late fees, mail your payment with enough time for it to arrive before the due date shown on your bill. The city's records show the postmark date, not the date you mail it, so sending early is safer than sending close to the important date.

Paying by phone or in person

You can pay by phone by calling the City of Naperville's utilities department. The phone number appears on your bill. Have your account number ready. Phone payments do not carry a convenience fee, and the payment posts when ready or within one business day depending on when you call.

In-person payments can be made at Naperville City Hall during business hours. Bring your bill or account number and a check, money order, or cash. The city accepts cash at the counter, though you will receive a receipt as proof of payment. In-person payments post to your account the same day or the next business day.

Late payments and past-due accounts

If your payment does not arrive by the due date on your bill, the city may charge a late fee. The amount of the late fee is set by city ordinance and appears on your next bill. Continuing to miss payments can result in service disconnection, meaning the city may shut off your water supply.

If you fall behind on payments, contact the City of Naperville's utilities department as soon as possible. The city may offer a payment plan or other options to help you catch up without losing service. Waiting until after disconnection makes the process more difficult and may result in a reconnection fee in addition to the past-due balance.

Checking your account and billing history

The online portal shows your current balance, due date, and recent payment history. You can view this information at any time by logging into your account on naperville.il.us. If you do not have an online account yet, you can create one using your account number and the address associated with your bill.

Paper bills are mailed monthly and show your usage, charges, and the amount due. If you want to stop receiving paper bills and view them online only, you can opt into paperless billing through the portal. This does not change your payment options — you can still pay by any method the city offers.

Frequently Asked Questions

How much does it cost to pay online with a credit card?

The convenience fee varies depending on the payment processor the city uses. The fee is shown on the portal before you confirm payment, so you know the exact amount before your card is charged. The city does not set this fee — the payment processor does.

What if I pay online but my payment doesn't show up?

Check your confirmation number and the date you submitted payment. Online payments typically post within one business day. If more than one business day has passed and the payment still does not appear in your account, contact the city's utilities department with your confirmation number and they can investigate.

Can I set up automatic payments so I don't have to pay each month?

Yes, the city's portal allows you to set up recurring automatic payments from your bank account. This option does not charge a convenience fee. You choose the payment amount and frequency, and the city deducts the money on schedule. Contact the utilities department to confirm the current autopay options available.

What happens if I miss the due date?

A late fee is added to your account. If you continue to miss payments, the city may disconnect your water service. Contact the utilities department when ready if you cannot pay by the due date — they may be able to work out a payment plan before disconnection occurs.

Is there a way to pay without a convenience fee?

Yes. Mailing a check, paying by phone, paying in person at City Hall, or setting up automatic bank account payments all avoid the online convenience fee. Only credit and debit card payments through the portal charge a fee.