Historical LSLR Replacement Data

Lead Service Line Replacement Data 
 

The below table summarizes DC Water’s lead service line replacement counts by fiscal year (October 1- September 30).  The table itemizes replacements as categorized by the definitions below.  Replacement counts will be updated at the end of each fiscal year. 

The data reflected in the table below is based upon the available pipe material information at the time of the replacement.  

 

Lead Service Line Replacement Categories

Public Full Replacement – Lead or galvanized pipe was removed and replaced with copper on the public side.  The existing pipe material was verified non-lead on the private side.  The premise now contains verified non-lead pipe material for the full length of service line.

Private Full Replacement – Lead or galvanized pipe was removed and replaced with copper on the private side.  The existing pipe material was verified non-lead on the public side.  The premise now contains verified non-lead pipe material for the full length of service line.

Full Replacement – Lead or galvanized pipe was removed and replaced with copper on both the public and private side.  The premise now contains verified non-lead pipe material for the full length of service line.

Public Partial – Lead or galvanized pipe was removed and replaced with copper on the public side.  Due to customer refusal or construction challenges (such as older, abandoned or unstable building structures), the private side was not completed.  

Fiscal Year Public Full Replacement Private Full Replacement Full Replacement Public Partial Total
2012 48 14 38 144 244
2013 44 7 34 154 239
2014 70 10 139 81 300
2015 129 12 158 228 527
2016 95 40 253 249 637
2017 116 23 310 121 570
2018 78 24 313 145 560
2019* 68 34 341 67 510
2020* 51 165 302 21 539
2021* 94 246 522 23 885
2022* 283 326 1,088 33 1,730
2023* 274 408 834 36 1,552
2024* 346 833 980 71 2,230
2025* 507 1,413 1,226 31 3,177
Total 2,203 3,555 6,538 1,404 13,700

*Years where replacements were organized under Lead Free DC. Use the LFDC Public Dashboard to view the the latest Lead Free DC replacement data.
 

Upcoming Meeting

Board of Directors Meeting

April 24, 2023

Monday 9:00 AM

Announcement

View of Mary at bottom of shaft inside tunnel shown from above
DC Water Launches Tunnel Boring Machine Mary, Marking Important Step for Potomac River Tunnel Project

First turn of cutterhead signals the start of excavation for the Potomac River Tunnel Project

In a defining moment for one of the District’s largest infrastructure investments, DC Water has marked its next major milestone in the Potomac River Tunnel Project. The first tunnel boring machine, Mary, has launched her northbound journey breaking through the soil to signal the start of excavation.

With the first turn of Mary’s drill-like cutterhead underground, the machine pushed forward to begin tunneling, representing the transition from years of planning and preparation to active tunnel construction on the $819 million project.

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
April 15, 2026
Wednesday, 9:30 AM

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.