Five boroughs · New York–Newark–Jersey City metro
Plumbing help in New York City, NY
Older PipesFrozen Pipes
New York City's plumbing is some of the oldest in the country: most housing predates 1980, and a large share predates World War II. Its water is unusually soft for a big city, so the problems come from age rather than scale: corroded pipe, failing risers, cast iron waste lines and aging service connections.
- Median home built
- 1953
- Built before 1980
- 78%
- Owner-occupied
- 33%
- Water hardness
- Soft
- ≈ 1.8 grains/gal
- Winter
- Regular hard freezes
- Plumbing code
- State code
Common repairs in New York City homes
- Repiping
With most housing built before 1980, galvanized and aging copper supply pipe is a frequent cause of rusty water, low pressure and repeated leaks.
- Drain Cleaning
Old cast iron waste stacks narrow with scale over decades, and shared lines in multi-family buildings clog more often.
- Water Line Repair
Older service lines between the street and the building can leak or be made of outdated materials.
What's behind the walls of New York City's older homes
The median home in New York City was built in 1953, and 78% of homes predate 1980. Homes from that era were typically built with copper or galvanized supply, cast iron drains, clay or cast iron sewer laterals.
- Galvanized steel supply (1900–1960)
- Copper supply (1950–2000)
- Polybutylene (some homes) (1978–1996)
- PEX / CPVC (1995–today)
Emergency plumbing in New York City
Call (833) 878-1592Shut off your main water supply if it's safe to do so. The emergencies below are listed most likely first for New York City homes, based on local conditions.
Frozen pipe risk in New York City
Regular hard freezes · 78% of New York City homes were built before 1980
Which plumbing rules apply in New York City
Plumbing work in NYC falls under the 2022 NYC Plumbing Code and must be performed by or under a Master Plumber licensed by the Department of Buildings. [2]
New York City's soft water
NYC's water comes from upstate reservoirs in the Catskill/Delaware and Croton watersheds. The citywide average hardness is about 1.8 grains per gallon (soft), rising to about 7 grains per gallon where Croton water is blended in. [1]
Heavy rain and storms
Plumbing services for New York City homes
New York City plumbing questions
Who can do plumbing work in New York City?
Plumbing work in NYC must be performed by or under the direct supervision of a Master Plumber licensed by the NYC Department of Buildings. Ask for the license number and confirm it with DOB before work starts.
Do I need a water softener in New York City?
Usually not. NYC's citywide average hardness is about 1.8 grains per gallon, which is soft. Areas receiving blended Croton water can reach about 7 grains per gallon.
Sources (3)
- U.S. Census Bureau, ACS 2024 1-year (B25035) · checked 2026-10-01
- NYC Department of Environmental Protection, Drinking Water FAQs · checked 2026-10-01
- NYC Department of Buildings · checked 2026-10-01