Payment channels

Pay City of San Marcos SMTX Utilities / Utility Customer Service Division

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 A dedicated this detail was not publicly posted. San Marcos calls the current platform Customer Connect but does not publicly identify the software vendor; the City is conducting a 2026 customer-interface-portal procurement.. Never enter account credentials into a lookalike site reached through an unsolicited message.

Open payment portal ↗

Telephone payment

Phone IVR

(512) 393-8333 for automated telephone payment of a current utility bill by electronic check, Visa, MasterCard, or Discover. Utility Customer Service is (512) 393-8383 for account help.

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

A dedicated this detail was not publicly posted. Customer Connect supports e-billing, auto-pay, usage-history viewing, and threshold notifications, but San Marcos does not publish a text-to-pay keyword, short code, or SMS enrollment sequence.

Mail-in address

San Marcos Utility Billing, 636 E. Hopkins, San Marcos, TX 78666. Customers should include the payment stub/account number and allow mailing time so payment arrives by the bill's due date.

Counters, drop boxes, and office hours

The Utility Billing office at 1040 Highway 123 (Seguin Highway), San Marcos, TX 78666, accepts in-person and drive-through payments Monday-Friday 8:00 a.m.-5:00 p.m., excluding holidays. After-hours night-deposit boxes are at the Municipal Building, 630 E. Hopkins, and the Utility Billing office, 1040 Highway 123; cash should not be left in drop boxes. H-E-B at 641 E. Hopkins and 200 W. Hopkins offer Western Union Convenience Pay for current statements, accepting check, cash, or money order with a $1 cash service fee and next-business-day credit. The City does not list all counter card instruments separately.

Accepted digital instruments

What you can use online

San Marcos accepts MasterCard, Visa, and Discover credit/debit cards; checking or savings-account drafts through recurring payment; and electronic check, Visa, MasterCard, or Discover through the automated phone system. Customer Connect provides one-time payment, auto-pay, paperless billing, usage history, and threshold notifications. The City does not publish Apple Pay, Google Pay, PayPal, or Venmo support.

2026 transaction pricing

Convenience fees

A dedicated this detail was not publicly posted. The public San Marcos payment pages do not publish a 2026 online card percentage, e-check fee, or digital-wallet surcharge. Western Union Convenience Pay separately charges $1 for cash payments.

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 City of San Marcos SMTX Utilities / Utility Customer Service Division 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 →