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5 services · New York

Leaks, pipes & freezing in New York, NY

Pipe problems range from a burst line that needs the water shut off right now to slow pinhole leaks that show up as a high water bill. A licensed plumber finds where the water is escaping, repairs or replaces that section, and tells you whether the rest of the piping is likely to follow.

  • Licensed local plumbers
  • The problem explained before work starts
  • Price agreed before the job begins
Ice forming on a copper pipe outdoors

Leaks, pipes & freezing services in New York

Local conditions

Leaks, pipes & freezing in New York: what's different

Galvanized and older copper supply lines in pre-war buildings leak at joints and corrode from the inside, and a leak in one apartment often shows up in the unit below. Building-wide riser replacements are major projects that management plans in phases.

Pipes near exterior walls and in unheated spaces freeze during cold snaps, especially in rowhouses and brownstones. NYC water from the upstate reservoirs is soft, so leaks and aging pipe matter more here than mineral scale.

Water and sewer in New York
The NYC Department of Environmental Protection (DEP) supplies water and runs the sewer system.
Permits in New York
Plumbing work generally requires a Licensed Master Plumber, and permits are filed with the NYC Department of Buildings.

New York housing and plumbing

Much of the housing stock is pre-war, with cast-iron drains, galvanized or copper supply and steam heat in many buildings.

Other New York conditions that affect plumbing

  • Licensed master plumber rules: Most plumbing work in NYC must be performed under a Licensed Master Plumber, so check the license before hiring.
  • Aging risers and drains: Old cast-iron stacks and galvanized supply in pre-war buildings leak and clog.
  • Freeze risk: Pipes near exterior walls and in unheated spaces freeze during cold snaps.
  • Water from upstate reservoirs: New York City's water comes from the Catskill, Delaware and Croton reservoir systems and is soft, so scale is less of an issue than leaks and aging pipe.

Neighborhoods and ZIP codes

Plumbers on Thawline cover New York and New York City (five boroughs), including Manhattan, Brooklyn, Queens, The Bronx, Staten Island, Harlem. ZIP codes: 10001 · 10002 · 10003 · 10004 · 10005 · 10006.

When to call a plumber in New York

  • Water spraying, dripping from a ceiling or pooling on the floor: shut off the main and call right away
  • No water from some faucets on a very cold morning
  • A water bill that jumped without a change in use
  • The water meter moving when every fixture is off
  • Warm spots on a slab floor, or the sound of running water in a wall
  • Low pressure throughout the house or rusty water from older pipes

How these problems start and how to choose between repair options is covered in the leaks, pipes & freezing guide.

Leaks, pipes & freezing questions in New York

Does plumbing work in New York City require a licensed master plumber?

Generally, yes. Most plumbing work must be performed by or under a Licensed Master Plumber, and permits are filed with the NYC Department of Buildings. Check the license before hiring.

Should I turn off the water if a pipe bursts?

Yes. Close the main shutoff valve first, then open a faucet on the lowest floor to drain the lines. If water is near outlets or the electrical panel, keep clear and switch off power only if you can reach the panel safely.

More plumbing in New York

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