Testing Shows Significant Decline in Drinking Water Lead Levels

March 16, 2015

DC Water reminds customers that lead sources are different in each property and urges residents to eliminate lead pipes and plumbing materials in their homes. Recent results from the utility’s required lead testing program mark the lowest lead levels measured in the last decade. Levels have continued to decline since 2004, when the water treatment process began including a corrosion control additive to reduce lead release in water. Since 2003, DC Water has replaced more than 19,000 lead service pipes on public property, representing the removal of nearly 115 miles of lead pipes that connect public water mains to household plumbing. DC Water replaces lead service pipes during water main upgrades or when customers choose to replace their portion of pipe on private property.

Drinking water is lead-free when it leaves the treatment plant and travels through the distribution system, but lead can dissolve when the water comes in contact with household lead service pipes or plumbing fixtures that contain lead. “We take our customers’ health very seriously,” commented Chief Executive Officer and General Manager George S. Hawkins. “We provide free lead test kits to help customers identify sources of lead in their homes, and we strongly encourage our customers to contact us for guidance on the removal of lead sources.” When samples have elevated levels of lead, DC Water offers a plumbing inspection and more extensive testing at no charge. To order a free lead test kit, customers can contact the Drinking Water Division at 202-612-3440.

In addition to the voluntary lead testing program, DC Water tests more than 100 homes across the city every 6 months. This testing is required by the U.S. Environmental Protection Agency (EPA) Lead and Copper Rule and results show that measured concentrations have reached historically low levels. The 90th percentile was 4 parts per billion (ppb) for the most recent reporting period, which means that at least 90 percent of the homes that DC Water tested were well below the EPA’s action level of 15 ppb. For more information about DC Water’s voluntary and required lead testing programs, visit www.dcwater.com/lead.

IMPORTANT CUSTOMER INFORMATION:

DC Water’s required lead monitoring program only measures the lead level in a fraction of District households, so it is critical that customers determine if there are any sources of lead in their homes. For tips on removing lead sources, download the DC Water brochure, Tips to Reduce Lead in Drinking Water (link provided below).

If you have any questions about lead in drinking water, please contact the Drinking Water Division at 202-612-3440 (Monday through Friday, 8 a.m. to 4:30 p.m.). All other questions or suggestions should be directed to DC Water Customer Service at 202-354-3600 (Monday through Friday, 8 a.m. to 5 p.m.) or the 24-Hour Command Center at 202-612-3400. Information is also available at www.dcwater.com/lead/minimizing.cfm.

Latest News

Placeholder DC Water Image

Following the completion of priority valve repairs, DC Water will be doing road restoration work along New York Ave and Bladensburg Rd NE this weekend. The work will require lane closures for the ...

Image: A long arm machine drilling anchor bolts into the slope.

On Saturday, November 22, 2025, one westbound lane of Canal Road Northwest NW will be closed between Foxhall Road (Glover-Archbold Trailhead) and the Georgetown University entrance. As part of DC ...

DC Water CEO David Gadis addresses audience at Pure Water DC Event

DC Water today announced the launch of Pure Water DC, a groundbreaking program designed to strengthen the District’s water supply resilience and secure a second source of drinking water for the nation’s capital. To kick off this initiative, DC Water convened a panel discussion along with industry experts, utilities, and federal and state regulators from across the region. The panel explored practical ways to make our water supply more resilient, including advanced water reuse —a growing solution nationwide to address vulnerabilities in the water supply. This method relies on advanced treatment processes to purify water to drinking standards so it can be safely recycled for various purposes.

Upcoming Meeting

Board of Directors Meeting

April 24, 2023

Monday 9:00 AM

Announcement

Image: A long arm machine drilling anchor bolts into the slope.
TRAFFIC ADVISORY: Single Westbound Lane Closure on Canal Road Saturday

On Saturday, November 22, 2025, one westbound lane of Canal Road Northwest NW will be closed between Foxhall Road (Glover-Archbold Trailhead) and t

Latest Blog Post
A helicopter lowers a drill rig to workers on the Potomac River.
DC Water begins drilling in Potomac River to explore options to rehab underwater sewer line
When one of your major sewer lines runs through the Potomac River, a backhoe and trencher won't do. That's why we've got helicopters carrying a 14-ton drill and workers suspended midair over the Potomac.
Upcoming Meeting
Date
December 4, 2025
Thursday, 9:30 AM

Upcoming Events

Customer Service Center Announcement

Payment Plan Incentive: provides a credit back of 40% of the last 3 payments made and in the new fiscal year 50% will be credited. 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.