Water Quality Report: DC Tap is Clean, Reliable

June 12, 2012

The most important resource for learning about the District’s tap water quality is now available. The District of Columbia Water and Sewer Authority (DC Water) has released its 2012 Drinking Water Quality Report online and by mail to every household in the District. The report shares information on how water is treated and tested to provide a supply that is clean and reliable for drinking, cooking and bathing.

District drinking water continues to meet all federal drinking water standards and testing programs ensure tap water is protective of the public’s health. In 2011, DC Water conducted more than 40,000 tests on samples from hydrants, commercial buildings and household taps. The 2012 Drinking Water Quality Report is an annual snapshot of regulatory and voluntary water testing programs that help safeguard our drinking water supply.

“Each day, we deliver more than 106 million gallons of affordable, clean drinking water to residents, visitors and businesses. Our most important job is to promote public health and hygiene,” said DC Water General Manager George S. Hawkins. “This report highlights another year of that work, and explains why the District can have every confidence in its tap water.”

District tap water costs $10 for 1,000 gallons. Bottled water costs at least $1,000 for the same amount of water. Unlike bottled water, drinking water is frequently monitored before it reaches customer taps and all these results are available to the public. The annual drinking water report and monthly test results provide valuable information about the quality of water flowing from the Potomac River and throughout the District.

Drinking water quality is a shared responsibility of DC Water, residents and the US Army Corps of Engineers, Washington Aqueduct. The Washington Aqueduct draws water from the Potomac River and is responsible for water treatment. DC Water purchases treated drinking water from the Washington Aqueduct and distributes water to more than 600,000 residents and businesses.

The 2012 Drinking Water Quality Report, monthly test results and tips to ensure household water quality are available at dcwater.com/testresults or customers can contact the Drinking Water Division at (202) 612-3440.

Latest News

Map of lane closure on Clara Barton Parkway at Maryland-DC Border

Drivers should expect delays on Clara Barton Parkway at the Maryland – DC border on Saturday, Sept 26. One lane will be closed from 7 a.m. to 3 p.m. while DC Water makes repairs as part of ongoing ...

Christening of TBM Emily with DC Water Interim General Manager Matt Brown holding bottle of tap water to christen Emily

DC Water celebrated the christening of Emily today. It’s the second giant tunnel boring machine (TBM) that will help build the 5.5-mile Potomac River Tunnel. The celebration continued with Community Day. Residents and families met Emily and stepped inside the tunnel where she will soon begin digging.

Map: Temporary closure of the southbound curb lane on Rock Creek and Potomac Parkway NW

DC CLEAN RIVERS – POTOMAC RIVER TUNNEL PROJECT

Drivers should expect a temporary southbound lane closure on Rock Creek and Potomac Parkway NW between F St and Virginia Ave on Saturday, September 19, and Sunday, September 20, 2026. The closure will be in place from 7 a.m. to 7 p.m. each day, weather permitting.

Upcoming Meeting

Board of Directors Meeting

April 24, 2023

Monday 9:00 AM

Announcement

Christening of TBM Emily with DC Water Interim General Manager Matt Brown holding bottle of tap water to christen Emily
DC Water Welcomes the Community Underground to See the Potomac River Tunnel and Christens Tunnel Boring Machine Emily

DC Water celebrated the christening of Emily today. It’s the second giant tunnel boring machine (TBM) that will help build the 5.5-mile Potomac River Tunnel. The celebration continued with Community Day. Residents and families met Emily and stepped inside the tunnel where she will soon begin digging.

Latest Blog Post
Emergency supplies arranged on a table, including bottled water, canned food, a backpack, first aid kit, flashlight, phone, medication and other essential items.
Simple Ways to Stay Prepared at Home
A few simple steps can help your household prepare for severe weather and temporary water or sewer service interruptions.
Upcoming Meeting
Date
October 8, 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.