Flexible Payment Plans
WSSC Water has now partnered with Promise to provide affordable, flexible and interest-free payment plans. Quick and easy to sign up online or call 301-900-5551.
Who is eligible?
All residential and commercial customers with a total balance of $50 or more.
What are the benefits?
By establishing a flexible payment plan for past-due water and sewer bills and staying current with the plan, customers will avoid late fees and possible water service turnoffs.
Both property owners and tenants are eligible to use the bilingual PromisePay Portal, which allows customers to:
- Sign up online or over the phone by calling 301-900-5551.
- Conveniently pay using credit or debit card, ACH, Apple Pay and Google Pay.
- Receive text reminders and notifications.
- Manage payments, request allowable extensions, modify due dates and change payment methods.
Need your WSSC Water Account Number?
Last Modified: December 29, 2025, 2:14 pm EST