How NYC Sewer Lines Fail, and What Repair or Replacement Involves
Your sewer line runs from the building, under the yard or the sidewalk, to the city main in the street. As with the water service, the length on your side is yours — including the part under public sidewalk, which surprises people every time.
How they tell you
A sewer line fails slowly and then all at once. Recurring backups at the lowest fixture in the building. Slow drainage across several fixtures at once, not just one. Gurgling from a toilet when you run a sink. Odors in the basement or the yard. Wet or sunken soil along the sewer path. Wastewater standing at the cleanout.
By the time most people call us they’ve tried a plunger, a bottle of drain cleaner, and a nephew.
Why they fail here
Much of what’s under these streets is clay tile and cast iron, laid when Brooklyn was a different city. Clay joints open, roots find the opening and follow the water in. Cast iron corrodes from the inside. The ground moves in February and the joints move with it.
The mechanism matters, because it decides the fix.
Repair or replacement
Root intrusion in an otherwise sound line is a repair — camera it, cut the roots, replace the compromised section. A collapsed run of clay tile is a replacement, in extra-heavy cast iron or NYC-approved PVC.
How the work actually goes
Camera the line. Pull the permit and the mark-outs. Open the street or the yard over the defective section only — sectional replacement wherever it’s possible, not a full line because a full line is easier to sell. Verify flow. Backfill and restore the surface.
New installations carry a multi-year workmanship guarantee, transferable to future owners.
When it’s an emergency
Wastewater rising into the basement or fixtures, a collapsed house trap, ground collapse from a failed line, or roots obstructing primary flow. Call (718) 965-3500.
Credentials, guarantees and permits
What we can show you in writing before any work starts.
Is Lady Liberty licensed, bonded and insured?
Yes. Lady Liberty Contracting Corp is fully licensed, bonded and insured for water main and sewer work throughout New York City. Certificates of insurance and licence details are available on request before any work begins.
Who actually performs the work — is any of it subcontracted?
The work is carried out under a New York City Licensed Master Plumber on our own staff, not subcontracted to another firm. That matters on permitted work, because the DEP and DOT filings are pulled under the licence of the plumber responsible for the job.
Do you guarantee your work?
Yes. Every installation and repair carries a 10-year workmanship guarantee. If an issue arises that relates to our work, we come back and put it right.
Do you handle the DEP and DOT permits, or is that on me?
We handle them. Permit filing, inspections and sign-off are managed in-house as part of the job, including street-opening permits and the restoration that follows.
Do you offer financing or payment plans?
Yes. Water main and sewer replacements are large, unplanned expenses, and payment options are available. See financing and flexible payment options.
What kind of work do you take on — and what don’t you?
We work on the water and sewer lines that connect a property to the city main: service line repairs and replacements, sewer laterals, excavation, DEP and DOT permitted work, and the street and sidewalk restoration afterwards. That covers residential, commercial and municipal properties across all five boroughs. We do not take on interior plumbing — in-house leaks, fixtures, heating or boiler work.
Service You Can Trust
