How NYC Water Mains Fail, and What Repair or Replacement Involves
The water main under your sidewalk is yours. Most people learn this the week it fails, usually from a notice taped to the door, and it is an unwelcome piece of news about property you didn’t know you owned.
The city owns the main in the street. You own the service line running from the tap at that main, under the sidewalk, into your building. When it breaks, the repair, the permit, the excavation and the sidewalk all belong to you.
How they tell you they’re failing
Water mains rarely go all at once. They announce it first — low pressure on the top floor, a puddle at the curb that doesn’t dry after two days without rain, cloudy water with sediment, a hissing under the sidewalk you only hear at night. Or a water bill that has quietly become a car payment.
Repair or replacement
Not every failure needs a new line. A break four feet in under the curb is a sectional repair: expose the defective length, replace it, pressure test, restore the surface. A copper service line leaking in three places is a replacement, and pretending otherwise spends your money twice.
We can’t tell you which before we see it. Anyone who quotes a water main over the phone has not seen your water main.
How the work actually goes
Camera inspection and leak diagnostics where access allows. Permits, then the utility mark-out — four utilities come out and spray-paint the street in four colors, which looks like vandalism and is the law. Targeted excavation over the defective section only. Copper service line, no-lead brass fittings, NYC-approved throughout. Pressure test and flow verification. Backfill, then the sidewalk goes back.
Every step answers to DEP, and where we open the street, to DOT.
When it’s an emergency
Active surface flooding, an underground rupture, or no water entering the building at all. Call (718) 965-3500. A person answers, including at 3am, which is when they break.
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
