Stormwater Billing

Frequency asked questions regarding your Stormwater Billing.

How is my bill calculated?

Your bill is based on your total impervious area divided by 1,200 which is rounded to the nearest whole number. This number is your billable unit which is multiplied by the current rate which will give you your monthly amount. For example, your total impervious area is 2,282 sq/ft divided by 1,200 which equals 1.9 or 2 when rounded. The 2 is multiplied by $6.00 equals $12.00 per month. If you receive a quarterly bill then your amount due is $36.00 (3 months x $6)

How can I pay my stormwater bill?

The City of Portland offers several ways to pay your bill.

1) Mail your check and coupon (lower bottom of your printed bill) to City of Portland Stormwater, PO Box 16046, Lewiston, ME 04342-9529.

2) Online (ebill) - There are three methods by using MyOnlineBill.

1) Pay Now – to make an occasional or one-time payment today.

2) Auto-Pay – to sign up for automatic monthly payments from your checking/saving.

3) Schedule Pay – to make a onetime payment with a future date.


What types of payments are accepted with the MyOnlineBill?

MyOnlineBill accepts ACH (Bank Routing and Account number), Visa & Mastercard. All credit card transactions are subject to a 2.5% online processing fee OR $1.00 if the transaction is below $40.00. However, ACH transactions will have no associated online processing fee.

Can I go paperless?

Yes, you can sign up to view your bills on-line with MyOnlineBill.

What do I need to register for MyOnlineBill service?

You will need your Stormwater bill account number. Using your account number, select your billing street address and create a user name, password, security question/answer, and enter your email address. You will receive an email with a “confirmation link” that you must select to complete your new account set-up. Once set up, only you can access your account.


How secure is my personal and banking information?

MyOnlineBill is PCI Level 1 Compliant and uses industry leader Verisign to ensure maximum security and privacy. All transactions are encrypted with the latest security software.

Can I pay more or less than I owe using the on-line payment option?

You can pay any amount if you are using the Pay Now or Schedule Pay options to make an occasional or one-time payment. If you signed up for the Auto-Pay program, the full amount of your bill will be automatically deducted from your bank account.

With MyOnlineBill how will I know if my payment has been made?

You will receive an email confirming your payment. You will see the payment amount deducted from your banking account statement. If using credit card, you will also see a separate Online Processing fee deducted by MyOnlineBill. Although your payment has been confirmed immediately by email, it can take up to 2 business days to post and be credited to your Stormwater account.