Your water main, the water service line that runs from the city main in the street to the meter in your building, is the property owner’s responsibility in New York City. Aging, leaking, or outdated water lines can cause pressure issues, contamination risks, and costly city intervention. Partial repairs won’t fix structural deterioration. Lady Liberty Contracting Corp provides full water main replacements using durable, NYC-approved copper, installed with proper excavation, bedding, and secure tie-ins to the city main.
Crews remove the failing line entirely, install a new continuous copper service line, complete pressure verification, and restore all affected surfaces to compliant condition.
Older NYC buildings often have aging water mains that pose serious risks: lead contamination, chronic leaks, low pressure, and costly water damage. Replacement with modern materials eliminates these problems permanently and increases property value.
Outdated, unsafe; full replacement required.
Multiple failures show structural deterioration.
Corrosion contaminates water supply.
Undersized or degraded pipe restricts flow.
Severely corroded and unstable material.
Temporary fixes no longer hold.
Additional fixtures require increased capacity.
City connection needs a new or upsized tap.
Continuous, NYC-approved pipe for long-term reliability.
From building foundation to city connection.
Minimized impact with precise trenching.
All required agency filings handled.
Sized to meet building demand and code.
Stability and flow verified before closure.
Sidewalk, asphalt, and soil restored.
Replacement starts with determining the existing pipe route, size, depth, and material. Crews assess fixture load requirements to select correct copper diameter. Route planning ensures safe trenching and avoids underground utility conflicts. This step confirms the full scope prior to excavation.
NYC DEP permits are required for replacing water service lines. Any street or sidewalk opening requires DOT approval. Utility mark-outs (gas, electric, telecom, fiber) ensure excavation safety. All inspections and agency coordination are managed to prevent administrative delays.
Controlled trenching exposes the entire failing service line. Old lead, galvanized steel, or deteriorated copper is removed completely to eliminate weak points. Excavation depth is stabilized using trench shoring when required.
A continuous Type K copper pipe is installed from the building foundation to the curb valve or tap connection. Pipe bedding is placed to protect against ground movement. All fittings, clamps, and joints follow DEP specifications.
The new copper pipe is connected at both ends and pressure-tested to ensure leak-free performance. Internal building fixtures are checked for stabilized pressure and improved flow.
Trench is compacted in structured layers to prevent settlement. Sidewalk slabs, asphalt, topsoil, or pavers are restored to compliant condition. Final inspections ensure city requirements are met.
Eliminates lead, galvanized, and corroded service line hazards
Restores strong, stable, and consistent water pressure
Improves water clarity and overall water quality
Reduces emergency failures and long-term repair costs
Ensures full DEP, DOT, and DOB compliance
Provides documented upgrades for insurance and resale
Supports increased building demand and future renovations
A leak does not always mean a new water line. We locate the failure first, then tell you which one makes sense.
If a repair is the right answer, see water main repair in NYC.
Every quote is built from the same few factors, and we walk you through each one before work starts:
We quote after we have seen the site. Request a water line replacement quote or call (718) 965-3500.
We replace water service lines in Brooklyn, Queens, Manhattan, the Bronx and Staten Island, including lead service lines in older homes, brownstones and multi-family buildings.
Most residential projects are completed within 1–2 working days after permits clear.
No. Water is only off during the final tie-in and testing.
Yes. Combined work reduces disruption and cost.
In New York City, the property owner is. The water service line is private from the connection at the city main, under the street and sidewalk, all the way to your meter. DEP maintains the main itself. If DEP finds a leak on your line, it issues a 3-Day or 10-Day Notice to the owner, which is why the repair or replacement needs a licensed Master Plumber and DOT street-opening permits.
Yes. Water main replacement is performed year-round in NYC.
Strictly, the water main is the city-owned pipe under the street, and the service line is the private pipe that branches off it to your building. Most New Yorkers, and most contractors, call the service line the water main, which is why you will see both terms on this page. When we replace your water main, we replace the full service line from the city main to your meter.
Replacing a deteriorated service line prevents pressure collapse, contamination risks, and emergency failures. Secure a compliant, long-life copper system now.
What we can show you in writing before any work starts.
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.
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.
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.
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.
Yes. Water main and sewer replacements are large, unplanned expenses, and payment options are available. See financing and flexible payment options.
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.
