New buildings, major renovations, and post-demolition rebuilds require correctly sized, correctly routed, and correctly permitted underground utilities. NYC DEP and DOB enforce strict standards for new sewer and water service lines.
Lady Liberty Contracting Corp installs new water mains, sewer lines, taps, curb connections, and full underground service systems for residential and select commercial projects across all five boroughs.
Work is executed with full agency coordination and built for long-term reliability.
Ground-up residential construction.
Apartments, townhomes, and conversions.
Projects requiring upgraded service capacity.
New services after old structures are removed.
Where DEP-compliant new connections are required.
Type K copper, DEP-approved routing.
Extra-heavy cast iron or PVC (where allowed).
New taps sized per building demand.
Required for service control and compliance.
Installed per NYC code with safe access.
Sidewalk, asphalt, soil, and landscape restoration.
Team reviews architectural, mechanical, and plumbing plans.
Key checks:
Fixture counts
Required pipe diameter
Preferred routing
Tap size requirements
Conflicts with existing utilities
Output is a defined service plan matching DEP and DOB standards.
Lady Liberty handles all permitting:
DEP water tap applications
DEP sewer connection permits
DOT street/sidewalk opening permits
DOB plumbing coordination
Utility mark-outs (gas, electric, telecom)
This eliminates project delays caused by paperwork errors.
Controlled trenching is performed along the planned route:
Open trench from building foundation to curb
Shoring installed if depth requires
Identify safe approach around gas and electric lines
Maintain alignment and trench structure
Prepare bedding for water and sewer lines
Crews install:
Type K copper
New curb valve
New curb valve box
New tap connection or tie-in point
Extra-heavy cast iron or PVC (where allowed)
Proper slope and grade
New house trap
New cleanouts
Secure joints and fittings
All material and techniques follow strict NYC code.
Systems undergo:
Pressure test for water service
Flow and slope check for sewer lines
DEP and DOB inspections
Corrective adjustments made on site if required.
After inspections:
Trenches compacted in controlled layers
Sidewalk slabs replaced
Asphalt restored
Soil and landscape brought to safe condition
Site is left ready for final construction phases.
Faster Construction Approvals
Correct installation prevents DOB/DEP rejections.
Long-Term Reliability
Durable water and sewer lines sized for real usage.
Full NYC Code Compliance
All work meets DEP, DOT, and DOB criteria.
Clean Documentation for Future Ownership
Inspection results and service maps provided.
Yes. Most new or rebuilt structures require new taps and full underground services.
Timing varies by depth, length, permits, and inspections—typically 1–4 days after approvals.
Yes. Installing both at the same time reduces cost and trenching.
Type K copper is required by NYC DEP.
Yes. We coordinate directly with design and construction teams.
Ensure your project meets NYC code with correctly sized, correctly routed, fully permitted sewer and water installations.
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.
