Payment channels

Pay Harlingen Waterworks System

Use the provider’s verified online, telephone, mail, or counter instructions. Check the final confirmation screen for the amount, processing date, and any transaction fee before submitting.

Primary online route

Use the official payment portal

The direct portal is the fastest route when it is available. The provider identifies its payment gateway as Continental Utility Solutions, Inc. / CUSI customer web portal. Never enter account credentials into a lookalike site reached through an unsolicited message.

Open payment portal ↗

Telephone payment

Phone IVR

956-430-6100, option 1; the system states that automated credit/debit payment is available 24 hours.

Have your account number and payment instrument ready. Follow the provider’s recorded prompts and retain the confirmation number.

Alternative channels

Mail, text, and in-person payment instructions

Pay by text

The portal supports SMS notifications after the customer creates an account and selects communication preferences. The current public materials do not publish a standalone text-to-pay keyword or SMS payment shortcode; customers should enroll through the portal rather than text a payment command.

Mail-in address

Harlingen Waterworks System, P.O. Box 1950, Harlingen, TX 78551. Mail a check or money order with the payment stub; do not mail cash.

Counters, drop boxes, and office hours

The HWWS main office is at 121 E. Harrison Avenue, Harlingen, Texas. The current notice says office hours remain Monday–Friday, 8:00 a.m.–5:00 p.m.; customer-service representatives are generally available Monday–Friday 7:30 a.m.–5:00 p.m. Three attended drive-through lanes operate Monday–Friday 7:30 a.m.–5:30 p.m., and a drive-through drop box and lobby/drive-through kiosks are available 24 hours. Payment substations include PNC branches, H-E-B, ACE Cash Express, Lopez Supermarkets, Speedy Check #35, Walmart, Sky 1 Digital, B&W Finance, and Express Communications; fees may apply and a current statement is required.

Accepted digital instruments

What you can use online

The portal accepts credit card, debit card, and one-time E-check; monthly ACH bank draft is available free of charge. Customers can also use bank bill-pay through their financial institution. Mobile-wallet support is not documented.

2026 transaction pricing

Convenience fees

Third-party processing fees apply to one-time electronic payments and monthly credit/debit card payments; the portal states the fee is the greater of $1.25 or 2.25%. Monthly ACH bank draft is fee-free.

Fees can vary by payment type, channel, account class, and processor terms. The checkout screen is the final fee disclosure.

Payment guidance

Choose the payment channel that fits your deadline

The safest payment path is the one published by Harlingen Waterworks System and matched to the account information on your bill. Online portals are convenient, but telephone, mail, counter, and drop-box options may follow different posting schedules and may use different fees.

For a routine payment, save the final confirmation page or IVR number and check when the transaction will post. For a same-day shut-off notice, do not assume that submitting a card payment automatically stops a field order; ask the provider what amount and confirmation are required.

Never send your account number, password, card details, or bank information to Water Ledger. Those details belong only on the provider’s verified payment channel or at an authorized counter.

Return to utility profile →Review shut-off rules →