Boulder Water Utility 2026: Bill Pay, Login & Phone

How to Pay Your Boulder Water Bill Online

Boulder’s official Customer Billing Portal supports one-time payments, guest payments, automatic payments and account management. You can use a bank account, accepted credit or debit card, or supported digital wallet options.

1. Open the city billing portal. Visit water.bouldercolorado.gov.
2. Choose your payment method. Select Quick Pay if you do not want to register, or log in to an existing Customer Billing Portal account.
3. Identify your account. For Quick Pay, select Pay Now and enter your customer-account number combination and the name listed on the account.
4. Find the bill. Select Search Bills. Review the bill details before choosing the invoice to pay.
5. Select the amount. Check the box beside the bill, add it to the payment cart and proceed with the full balance or an available custom amount.
6. Enter payment details. Choose an accepted bank-account, card or digital-wallet option. Review any fee shown before authorizing payment.
7. Save your confirmation. Retain the transaction receipt until the payment appears in your utility account history.

Water, wastewater and flood/stormwater charges are billed monthly. The city says payments are due within ten days after receiving the bill.

Boulder Water Utility Login and Registration

The current City of Boulder Customer Billing Portal is at water.bouldercolorado.gov.

The city introduced an upgraded billing platform in November 2024. Customers who registered only with the older system must create a login for the newer portal.

Log In to Your Account

1. Open the official Boulder utility portal.
2. Select the login option.
3. Enter your registered email address and password.
4. After signing in, select View/Pay Bill to review account information.
5. Use the available options for bills, water usage, AutoPay and alerts.

Register for the First Time

Have a recent utility bill available. Boulder requires information from your existing customer account.

1. Open the Customer Billing Portal.
2. Select Register Now or Create an Account.
3. Enter the service address’s five-digit ZIP code.
4. Enter the first full customer name exactly as shown on the bill.
5. Enter your complete customer-account number combination.
6. Provide your email address, create a password and complete the required security information.
7. Submit the registration and follow the confirmation instructions.

How to Enter Your Customer and Account Numbers

Boulder requires the customer number and account number together, separated by one hyphen, without spaces.

Example format: 0001234-0012345678

Include every leading zero. Both numbers appear near the upper-left corner of the utility bill.

If two customer names appear on the bill, enter only the first name listed during registration. Use the five-digit service ZIP code, not the extended ZIP+4 code.

Forgot Your Password or Account Locked?

Use the password recovery option on the current portal. Boulder states that accounts temporarily blocked after too many unsuccessful login attempts generally require a three-minute wait before trying again.

If you have not registered with the new portal, resetting an old portal password will not establish your account. Register first.

For help, email customerportal@bouldercolorado.gov or call 303-441-3260.

More instructions: Official Customer Billing Portal FAQs.

Other Ways to Pay a Boulder Utility Bill

You do not have to use the online portal. The city also accepts payments by telephone, mail and its payment drop box.

Pay Your Utility Bill by Phone

1. Call 844-581-6021.
2. Follow the automated payment instructions.
3. Enter the requested utility account details.
4. Choose an accepted credit card, debit card or ACH/bank-account option.
5. Confirm the transaction and retain the payment reference.

Mailing Address for Bill Payments

City of Boulder Utility Billing Office
P.O. Box 734774
Dallas, TX 75373-4774

Include your payment stub and write your account number on the memo line of your check. This Dallas address is the city’s official payment-processing address, not a Boulder customer service office.

Boulder Municipal Building Payment Drop Box

Municipal Building
1777 Broadway
Boulder, CO 80302

The payment drop box is located on the west side of the building.

Get directions to the Municipal Building.

How to Set Up or Change AutoPay

AutoPay is useful if you want recurring bills paid automatically instead of remembering each month’s due date.

1. Log in to Boulder’s Customer Billing Portal.
2. Select View/Pay Bill.
3. Open the Manage Accounts screen.
4. Select Auto Pay.
5. Choose New AutoPay Setup or edit an existing arrangement.
6. Select the appropriate customer-account combination.
7. Enter the requested payment settings and select Save this AutoPay Setup.

If you manage several utility accounts, complete AutoPay enrollment separately for each one.

To schedule a payment on a date other than the bill due date, check the Schedule Payments option under View/Pay Bill.

2026 Boulder Water Utility Rates and Monthly Charges

The City of Boulder approved utility rate increases effective January 2026. The city reported an approximately 8% increase in average residential water charges for the year.

Unlike a simple flat gallon rate, Boulder uses individual water budgets. Your monthly allowance affects which consumption rate blocks apply to your water use.

Published Water Consumption Rates

These rates are applied progressively according to how much of the month’s water budget you use. A household exceeding its budget can pay substantially more per additional 1,000 gallons.

Monthly Water Meter Service Charges

Example: A customer inside Boulder with a 3/4-inch meter has a published $21.51 monthly water service charge before water consumption, wastewater, stormwater and other applicable charges.

The water budget and total consumption determine the remainder of the water charge.

Other Published Utility Charges

The city’s public charge schedule also lists reconnection and other service fees. Verify transaction-specific charges with the utility office because fees can change separately from regular usage rates.

Official source: City of Boulder Monthly Water User Charges.

Why Your Boulder Water Bill Can Be Higher Than Expected

Boulder’s water-budget billing system is one of the most important things to understand before investigating a high bill.

Each account has a monthly water budget determined by factors such as customer type, property characteristics and historical consumption. Outdoor watering allowances can also vary by season.

As usage moves above your allocated water budget, progressively higher water rates apply.

How to Check Your Water Budget and Usage

1. Sign in to the Boulder Customer Billing Portal.
2. Open your water usage dashboard.
3. Review the graph comparing actual consumption with your monthly water budget.
4. Compare current consumption with previous months and the same season in earlier years.
5. Check whether your use exceeded 100%, 150% or 200% of the allocated budget.
6. Investigate irrigation, leaking toilets, outdoor faucets or other unusual water use.

The portal includes interactive consumption graphs and historical information that may help identify changing water-use patterns.

Can You Request a Larger Water Budget?

Yes, under qualifying circumstances. Boulder accepts water-budget adjustment applications for eligible properties.

1. Visit City of Boulder Water Budgets.
2. Read the water-budget adjustment rules.
3. Open the Water Budget Adjustment Application.
4. Provide the property and supporting information requested.
5. Submit the application for city review.

How to Request a Water Leak Adjustment

If a hidden or unexpected plumbing leak caused unusually high water consumption, Boulder allows customers to request a utility bill adjustment under qualifying conditions.

Important deadline: The city must receive the request and proof of repair within 90 days of the due date on the bill covering the leak.

1. Find the affected bill. Note the billing period, due date and abnormal water consumption.
2. Identify and repair the leak. Keep a plumber’s invoice, repair receipt or other acceptable documentation.
3. Open the official form. Visit Water Leak Adjustment Request.
4. Complete the required information. Include the account, service address, leak details and repair information.
5. Upload supporting evidence. Provide invoices, receipts or documentation showing that the problem was investigated and corrected.
6. Submit within the deadline. Keep a copy of the application and follow up if additional information is requested.

Boulder limits adjustments to two consecutive months and a maximum of three adjustments per property under the same account holder.

Seasonal watering, pool filling, vehicle washing, theft, vandalism or negligence generally do not qualify under the city’s published criteria.

Start, Stop or Transfer Boulder Water Service

If you are moving into a property served by City of Boulder Utilities, use the customer portal to request a new service account. Existing customers can also submit stop or transfer requests.

Start Water Service

1. Open the official Customer Billing Portal.
2. Find the Start Service tile on the portal homepage.
3. Select the new-service option rather than the registration form for existing accounts.
4. Enter the property address and requested service information.
5. Provide the required applicant and contact details.
6. Submit the request and follow any additional instructions from Boulder Utilities.

Important: The existing-account registration form is not the same as the form for starting service at a new address.

Stop Service When Moving Out

1. Log in to the customer billing portal.
2. Select the stop-service request option.
3. Provide the account and requested termination details.
4. Submit the request and retain the confirmation.
5. Review the final meter reading and final bill when issued.

Boulder charges for final meter readings. If a property is being sold, the title company generally handles the final-read request using the city’s Property Transfer Form.

Find official service instructions on Boulder Water Utilities.

Report a Water Main Break, Sewer Problem or Service Interruption

For urgent water and sewer problems, Boulder directs customers to its Utilities Maintenance contact number.

Water and sewer emergencies: 303-441-3200.

The number is available for urgent reports and routes after-hours calls to the appropriate staff.

What to Do if Water Suddenly Stops

1. Check whether the problem affects one fixture or the entire building.
2. If safe, check your property’s accessible plumbing shutoff valve.
3. Ask nearby neighbors whether their water service is also affected.
4. Look for visible street flooding or evidence of a water main break.
5. Call 303-441-3200 and provide the nearest address or intersection.
6. Describe when the problem began and whether surrounding properties are affected.

Boulder says water meters are commonly located in pits between the sidewalk and street, or near the sidewalk in the public right-of-way. Do not tamper with utility-owned meter equipment.

Boulder Utility Billing Phone Numbers and Office Hours

Utility Billing Office Hours

Monday–Wednesday: 9 AM–4 PM
Thursday: 9 AM–3 PM
Friday: 9 AM–4 PM

For billing inquiries, contact 303-441-3260 during these hours.

The city also provides a Utility Billing Department Contact Form for non-emergency account questions.

Boulder Water Quality and Local Utility Information

Boulder receives drinking water from several mountain and watershed sources, including the headwaters of Boulder Creek and sources associated with the upper Colorado River system.

The Utilities Department operates drinking water treatment and distribution, wastewater services, stormwater management and flood infrastructure.

Where to Check Drinking Water Quality

For concerns involving drinking water color, taste, odor or quality, contact:

Water quality phone: 303-413-7350
Email: drinkingwater@bouldercolorado.gov

Review official information through the Boulder Utilities Department.

Not Every Boulder Address Uses City Water

Some properties outside city service boundaries receive water from independent districts, private providers or wells. If you have a Boulder mailing address but no City of Boulder water bill, confirm your actual provider before using the city payment portal.

Private well customers may receive a city wastewater bill without receiving city drinking water service.

Frequently Asked Questions

Official City of Boulder Water Utility Resources

• City of Boulder Water Utilities and Bill Payment Information
• Official Customer Billing Portal
• Customer Portal Registration and Troubleshooting
• Water, Wastewater and Stormwater Charges
• Water Budgets and Adjustment Applications
• Official Water Leak Adjustment Form
• Utility Billing Contact Form
• Boulder Utilities Department

Information reviewed: October 23, 2026. Rates, account procedures and service fees may change. Confirm current transaction-specific details through the official city utility website.

Independent information notice: WaterUtilities.org is not affiliated with or operated by the City of Boulder Utilities Department. This guide provides public information and official service links. We do not process utility payments or access customer accounts.