District of Columbia Residents: Here's What's in Your Tap Water

June 23, 2010

The District of Columbia Water and Sewer Authority (DC Water) has released its 2009 Annual Drinking Water Quality Report, the most comprehensive drinking water resource delivered to District residents each year. The report provides valuable information about the water flowing from the Potomac River to taps throughout the District. 

"Water is essential to everyday life, and we are committed to delivering high-quality drinking water that is protective of the public's health," said DC Water General Manager George S. Hawkins. "Accurate information empowers people to make important decisions about their tap water. It’s our goal to make sure everyone in the District knows they can be confident in, and proud of, their water supply."

Drinking water quality in the District has met all federal regulatory standards for the past five years, except for a turbidity violation on a single day in 2008. The Drinking Water Quality Report provides information on water quality monitoring, regulated contaminants and how our drinking water compares to federal standards. DC Water conducts more than 30,000 water quality tests each year. 

DC Water is investing its resources in transparent and reliable information about the drinking water it delivers and how water quality can vary among homes. In addition to mandatory monitoring, DC Water conducts voluntary sampling in schools, daycares and customer homes and works closely with residents to address household water issues, such as lead and aging pipes. 

Ensuring high-quality water from the Potomac River to District households and other buildings is a shared responsibility among DC Water, residents, and the Washington Aqueduct (the federal agency responsible for treating the drinking water). DC Water encourages residents to learn about District drinking water and how household plumbing can affect their water. Annual reports, monthly water quality testing results and tips on ensuring water quality are available on the DC Water website at www.dcwater.com. 

For more detailed information, visit http://www.dcwater.com/drinking_water or contact the Water Quality Division at (202) 612-3440.

Latest News

Photo of LFDC work on a street in the Trinidad NE Neighborhood

Public Encouraged to Provide Comment through June 23

DC residents who want to replace their lead service lines may soon have more options to do it sooner—without having to wait for construction to reach their block.  While the Lead Free DC Program replaces lead service lines at no cost, DC Water has proposed two updates to its program that would make it easier and faster for some residents to get their lead pipes replaced, especially those at higher risk of lead exposure. These proposed changes have been published in the DC Register and are now open for public review. 

Graphic with details for the public hearing on June 23 at 6:30 p.m.

As DC Water’s Board of Directors considers proposed rate increases for the upcoming 2027 and 2028 fiscal years, we’re asking customers to provide feedback during a public hearing on Tuesday, June 23 at 6:30 p.m.

The proposed rate changes would support critical investments in safe, reliable drinking water, replacement of aging water and sewer lines, cleaner local waterways, and continued lead service line replacement across the District.

Placeholder DC Water Image

DC Water will host a virtual community meeting on Thursday, June 11, 2026, to inform residents and other stakeholders about the emergency rehabilitation of a section of the Potomac Interceptor at Muddy Branch in Potomac, Maryland.

Upcoming Meeting

Board of Directors Meeting

April 24, 2023

Monday 9:00 AM

Announcement

Photo of temporarily relocated section of Piney Branch Parkway
Piney Branch Parkway Section to Reopen Monday, Restoring a Key Route for DC Commuters

Following a 27-day closure, DC Water will reopen a section of Piney Branch Parkway between Arkansas Avenue and Beach Drive NW early Monday morning, restoring an important cross-town connection for thousands of District commuters. During the closure, a section of the road was temporarily relocated for construction of DC Water’s Piney Branch Tunnel Project.

Latest Blog Post
DC Water General Manager and CEO David Gadis recognizes Lily MacDonald during the May Board of Directors meeting.
From Classroom to Community: A Student Spotlight on DC Water's SPLASH Program
A speechwriting assignment became a call to action for water access and affordability through DC Water's SPLASH program.
Upcoming Meeting
Date
July 2, 2026
Thursday, 9:30 AM

Upcoming Events

Customer Service Center Announcement

Payment Plan Incentive: provides a credit back of 50% of the last 3 payments made. Eligible participants are residential customers who have had an outstanding balance for 60 days or greater and with an outstanding balance of $500 or more.