![Gov. Larry Hogan has requested a presidential disaster declaration for the state because of flooding from the heavy rains that devastated Frederick and Washington counties May 15–19. (WTOP/Nick Iannelli)](https://wtop.com/wp-content/uploads/2018/05/DdZQBMxXUAchTh0.jpg)
![“While Tuesday’s rain was relatively short in duration and very intense, its effects are still being felt by many of our residents and businesses, and will be for some time,” City of Frederick Mayor Michael O'Connor said. (WTOP/Nick Iannelli)](https://wtop.com/wp-content/uploads/2018/05/DdZQBM4X4AAJYUF.jpg)
![Unceasing rains may exacerbate conditions in Frederick. (WTOP/Nick Iannelli)](https://wtop.com/wp-content/uploads/2018/05/DdZQBMwXUAE2ZCp.jpg)
![Water rescues have been nonstop since Tuesday's downpour. (WTOP/Nick Iannelli)](https://wtop.com/wp-content/uploads/2018/05/DdZQBMwX4AEK_dX.jpg)
![Gov. Larry Hogan has requested a presidential disaster declaration for the state because of flooding from the heavy rains that devastated Frederick and Washington counties May 15–19. (WTOP/Nick Iannelli)](https://wtop.com/wp-content/uploads/2018/05/DdZQBMxXUAchTh0-260x174.jpg)
![“While Tuesday’s rain was relatively short in duration and very intense, its effects are still being felt by many of our residents and businesses, and will be for some time,” City of Frederick Mayor Michael O'Connor said. (WTOP/Nick Iannelli)](https://wtop.com/wp-content/uploads/2018/05/DdZQBM4X4AAJYUF-260x174.jpg)
![Unceasing rains may exacerbate conditions in Frederick. (WTOP/Nick Iannelli)](https://wtop.com/wp-content/uploads/2018/05/DdZQBMwXUAE2ZCp-260x174.jpg)
![Water rescues have been nonstop since Tuesday's downpour. (WTOP/Nick Iannelli)](https://wtop.com/wp-content/uploads/2018/05/DdZQBMwX4AEK_dX-260x174.jpg)
WASHINGTON — Officials in the flooded city of Frederick, Maryland, are asking residents to limit their use of water.
The city’s wastewater treatment plant is “inundated and at risk of additional overflow,” a spokesman said in a news release.
To avoid backups and to be able to safely treat wastewater, residents should refrain from nonessential water use, such as washing clothes and dishes.
Car spun off flooded out Willowbrook Rd in Frederick. Now being hauled out of standing water. @WTOP pic.twitter.com/F4VTG3aiS4
— Nick Iannelli (@NickWTOP) May 17, 2018
If there is a sewer backup, call the department of public works at 301-600-1440.
They also advise residents to avoid the area of Carroll Creek near the confluence of the Monocacy River due to potential sewer overflows.