Sewer Line Repair in Washington, DC

Signs the trouble is in the main line

• Several drains slow down at once rather than one fixture
• Water comes up in a basement floor drain or the lowest tub when the washer drains
• Toilets gurgle or bubble when another fixture runs
• A sewer smell near the cleanout, in the basement or in the yard
• A line that was cleared recently is already slow again

A single slow bathroom sink is usually a local clog, not the sewer.

Private line or public sewer

DC Water owns and runs the public sewer system. The lateral serving your building is generally a private plumbing matter, so a plumber diagnoses and repairs it. If wastewater is overflowing from a manhole, coming up in the street, or several neighbors have the same backup at once, call DC Water's sewer emergency line at 202-612-3400 before hiring anyone. Exactly where your responsibility ends can vary by property, so ask DC Water if the damage looks close to the street.

Choosing the fix

Why DC laterals fail

With a median build year of 1957 and whole neighborhoods of rowhouses that predate it, many District homes can still have their original clay or cast iron laterals. Clay joints let roots in from street trees and yard plantings. Cast iron rusts from the inside until scale catches paper and the bottom of the pipe thins out. Settled soil can leave a belly that holds waste.

Digging in a dense city

Rowhouse lots often leave little room for equipment, and a lateral can run under a front stoop, a patio or a shared walkway. That is one reason lining from inside is popular here when the pipe qualifies. Work in public space or a sidewalk usually involves extra coordination. Plumbing permits in the District come from the DC Department of Buildings, and only a contractor holding a DC license for the trade can apply, so ask whether your job needs one and confirm the plumber pulls it.

What affects cost

Depth, access, the length of the damaged section, the repair method and whether pavement must be cut all move the price. Keep the camera video so you can compare quotes.