Utility Billing

Irrigation Billing

For current 2018 Irrigation Assessments: Due date is April 1, 2018. Payment deadline is June 30, 2018, before 5:00 p.m. Partial payments towards balance are accepted, provided that the bill is paid in full by June 30, 2018. Accounts not paid by June 30, 2018, will be assessed a 2% penalty, 8 % per annum delinquent interest, and a $41.00 late fee.

Quick Payment Feature

You can now make a one-time payment without having to register. Just go to https://nampa.merchanttransact.com/Bills/Default.aspx , enter your account number, and click on Make Payment. Enter your payment information and submit. A receipt will be e-mailed to you. There is no fee for this service.

Nampa Shares & Cares

In this challenging economy, many Nampa families are having a hard time making ends meet. The City of Nampa’s Utility Billing office has joined forces with Western Idaho Community Action Partnership (WICAP) to launch the Nampa Shares and Cares Program. 
By adding a tax-deductible donation to your bimonthly city utility bill, you can help someone less fortunate pay their water and sewer bill. 100% of your donation will be used to help those in need. 

E-Reminder Notification

With our hectic lives it is easy to forget when bills are due. Signing up for email reminders may prevent an unnecessary interruption of your city utilities. For more information about the program or to sign up, please select the form below.

E-Reminder Form


  1. Utility Billing

    Physical Address
    401 3rd St South
    Nampa, ID 83651

    Phone: (208) 468-5711
    Fax: (208) 318-2314

    Monday - Friday
    8:30 a.m. - 5 p.m.