Fire Sprinkler Main Installation and Repair in NYC
A fire sprinkler main is a dedicated line from the city water main into the building, separate from the domestic supply. It exists to do one thing, once, and it has to work that day.
- Fire Sprinkler System Installation
- Fire Sprinkler System Inspections
- Fire Sprinkler System Repairs
- Fire Sprinkler System Maintenance
- Fire Sprinkler System Upgrades
What the work involves
A new tap at the city main, or replacement of an existing one. The line is sized to the system it feeds, and the tap is approved by DEP before anyone opens the street. Backflow prevention where required.
Why a building needs one
New construction. A sprinkler system added to an existing building. An undersized or corroded main no longer delivering the pressure the system was designed around. In older buildings, a main that has simply reached the end of its life.
The approvals
DEP for the tap and the water supply, DOB for the plans, DOT for the street opening. Three agencies, one line.
Service You Can Trust
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.
