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WSSC Water is Winter Ready
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Drinking water not impacted by a sanitary sewer overflow occurring after the collapse of DC Water’s sewer main in Montgomery County.
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Customer Service
301-206-4001 
Weekdays: 8:00 am - 6:00 pm 
Email: Customer Service
One Stop Shop
Weekdays: 8:00 am - 5:00 pm
Interactive Voice Response System
301-206-4001
24 hours, 7 days/week
Toll-Free: 800-828-6439
TTY: 301-206-8345
Visit Customer Service

WSSC Water offers five ways to pay your bill: Online, by Phone, by Mobile App, by Drive-Thru, by Mail and in Person. Go to Pay My Bill for more information.

Pay Your Bill Now

If you're experiencing a water emergency, such as a broken water main, or a sewer emergency, report it using our mobile app, email the Emergency Services Center, or call us at 301-206-4002.

Report a Problem

We're here to help. Eligible residential customers may start a pay plan or learn more about all of the financial assistance resources. Get started by going to Flexible Pay Plans.

Financial Assistance Programs

Permit Services is open Monday-Friday, 7 a.m.-4 p.m. except Wednesdays, 7 a.m.- Noon. Call us at 301-206-4003 for more information.

Go to ePermitting

Learn More about Permit Services

Water Filtration

WSSC Water operates and maintains water filtration plants to create safe drinking water for all. We accomplish our mission safely, cost-effectively, and in a manner that serves our customers as well as protects the environment.

Potomac Water Filtration Plant

How We Filter Water

We operate and maintain two water filtration plants located in Prince George's and Montgomery County, Maryland. Our filtration process passes all regulatory requirements to ensure our customers receive the best quality water. 

The average demand we get from our customers is approximately 170 million gallons per day (MGD)! Our Patuxent water filtration plant produces a maximum of 100 MGD, while our Potomac plant was recently upgraded to produce a maximum of 283 MGD. That's a lot of water!

View our interactive map to learn how we turn source water into clean, safe drinking water.

More about water

WSSC Water Dams and Reservoirs

To be sure there's always enough water to serve our (almost) two million customers, we own dams that create reservoirs storing billions of gallons of ...

Last Modified: July 10, 2025, 1:07 pm EDT