What We Do

DC Water distributes drinking water and collects and treats wastewater for more than 672,000 residents and 17.8 million annual visitors in the District of Columbia. DC Water also provides wholesale wastewater treatment services for a population of 1.6 million in Montgomery and Prince George's counties in Maryland, and Fairfax and Loudoun counties in Virginia. We are proud to provide these vital, safe, and high-quality services to our customers, while also protecting and enhancing our environment.

To distribute drinking water, DC Water operates more than 1,300 miles of pipes, four pumping stations, five reservoirs, four elevated water storage tanks, 43,860 valves and 9,500 public hydrants. To collect wastewater, DC Water operates 1,900 miles of sanitary and combined sewers, 22 flow-metering stations, and nine off-site wastewater pumping stations. To treat wastewater, DC Water operates the Blue Plains Advanced Wastewater Treatment Plant, the largest advanced wastewater treatment facility in the world.

If you're a DC Water customer and have questions about your service, please visit Consumer Services. You can also get information on the status of fire hydrants in your neighborhood.

What can you find in this section?

  • Drinking Water
    See FAQs, water reports and other information on how DC Water works to keep your drinking water safe.
  • Wastewater Collection
    DC Water constructs, maintains and repairs sewers in the District of Columbia.
  • Wastewater Treatment
    Find out about our pretreatment program, wastewater treatment process and biosolids management program. The DC Water Blue Plains Advanced Wastewater Treatment Plant facility is the largest of its kind in the world and is nationally recognized as an industry leader in operations, environmental stewardship and research.
  • Finance
  • Fire Hydrants
    There are more than 9,500 public hydrants in the District.
  • Projects & Initiatives
    Features major projects and initiatives underway at DC Water to improve service to customers, including the Clean Rivers Project.

What We Do