During holidays, administrative offices are closed. 

However, in the event of an emergency such as a broken water main or sewer back-up, our 24-hour call center is staffed to assist our customers.   The number is (301) 206-4002 or e-mail the Emergency Call Center.  In addition, you may file a claim day or night by calling (301) 206-7095. Our Interactive Voice Response System is also available 24 hours a day to answer your routine billing questions.