Washington · District of Columbia
Water Line Repair and Replacement in Washington, DC
Before paying to replace a water service line in Washington, DC, check your address with DC Water. Its Lead Free DC program replaces lead service lines and covers the cost in many situations, with discounts in others. DC Water also publishes a map of service line materials by address.
- Independent local pros
- Free referral, no obligation
- You approve the price before work starts
What is different about water line repair and replacement in Washington?
The line has a public section, in public space, and a private section on your property. Which program applies depends on things such as whether DC Water is already working on your block and whether the public side has been replaced. Replacing only one side is discouraged, because it leaves lead in place and can raise lead levels for a time.
In a rowhouse the service usually runs under the front yard and steps into the basement, so new pipe is commonly pulled through instead of trenched. If the line is leaking now, call DC Water as well as a plumber and ask how a leak on a lead line affects your options.
From the Washington plumbing guide
Lead service lines
DC Water's Lead Free DC program aims to replace the city's lead service lines and offers free and discounted replacement depending on the situation. Check your address with DC Water before paying a plumber.
What to check and ask before work starts in Washington
- Look up your address on DC Water's service line map
- Ask DC Water which Lead Free DC program applies to you
- Ask whether both the public and private sides will be replaced together
- Confirm the plumber is licensed in the District
Licensing and permits for water line repair and replacement in Washington
Plumbers in the District are licensed through the Board of Industrial Trades, administered by the Department of Licensing and Consumer Protection, and plumbing permits are issued by the Department of Buildings. Work in a historic district can need additional review when it affects the exterior.
Keystream Plumbing is a referral service. We do not perform plumbing work or hold a contractor license. The independent plumber you are connected with is responsible for licensing, permits and the work itself.
What the job usually involves
The steps are the same in Washington as anywhere; the local conditions above change how each one is done.
- Confirm and locate
- Mark utilities
- Repair or replace
- Test and restore
Water Line Repair and Replacement questions from Washington
What if my service line is listed as unknown?
Check the pipe where it enters the basement: lead is dull gray, soft and non-magnetic. DC Water can also help identify the material. Lines listed as unknown are treated cautiously until they are confirmed.
Should I use a filter until my lead line is replaced?
DC Water advises residents with lead service lines to use a filter certified for lead removal for drinking and cooking, and to follow its flushing guidance. Check its current recommendations.
Sources
- Lead Free DC and service line map, DC Water
- Water quality and sewer system, DC Water
- Lead service lines, US Environmental Protection Agency
Local information reviewed October 5, 2026. Rules and programs change; confirm details with the agency before you rely on them.
More plumbing help in Washington
Water Line Repair and Replacement in other cities
Ownership rules, soil, water and pipe materials make this a different job from one city to the next.
Related guides: Low Water Pressure: Causes and Fixes.
Need water line repair and replacement in Washington?
Call (833) 520-4758. Same-day service is often available; call to check timing.