What's actually causing this
Pipes leak at joints when thread sealant dries out, at elbows where water pressure concentrates, or anywhere corrosion has weakened the pipe wall. PVC joints also crack from freezing temperatures or physical impact.
What you'll need
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- Pipe repair clamp Shop →
- Plumber's tape (PTFE) Shop →
- Pipe cutter Shop →
- PVC cement and primer Shop →
- SharkBite push-to-connect fittings Shop →
Step-by-step fix
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1
Shut off the water supply
Turn off the main water shutoff valve. Open a faucet downstream to drain remaining pressure from the pipe.
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2
Dry the pipe completely
Use a towel and fan to dry the area around the leak. No repair compound bonds to a wet surface.
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3
Apply a pipe repair clamp (temporary)
Center the rubber gasket over the leak and tighten the clamp screws evenly. This buys time for a permanent repair.
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4
Cut out and replace the damaged section (permanent)
Cut 2 inches on either side of the damaged area using a pipe cutter. Install push-to-connect (SharkBite) couplings on each side for a no-solder permanent fix.
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5
Test under pressure
Slowly turn the water back on. Watch the repair area for 10 minutes. Check all connections for moisture.
In New York, tap water is moderate (60–120 ppm). NYC tap water is among the softest in major U.S. cities — sourced from Catskill/Delaware watersheds. Mineral buildup on fixtures is less of a concern here than in Sunbelt metros, but older buildings may have internal corrosion from aging galvanized pipes.
Plumbers in New York typically charge $150–250/hr. Most homeowners budget $800–2,500 for common repairs like fixture replacement, drain clearing, or valve repairs.
NYC requires a Licensed Master Plumber for most plumbing work. Homeowners cannot self-permit plumbing in most cases. DOB permits required for any work beyond simple fixture replacement.
Pre-war buildings (pre-1940) commonly have galvanized steel pipes that corrode internally, reducing flow and discoloring water. Many brownstones still have original cast-iron drain stacks. Copper replacement is common in renovations but requires licensed plumber approval.
New York winters regularly bring freezing temperatures. Pipe freeze risk is real, especially in older homes with uninsulated exterior walls. Heat tape and foam insulation on exposed pipes are worthwhile investments. Know where your main water shutoff is before winter.
DIY in New York: NYC's building code and co-op/condo board requirements make DIY repairs more restricted than most metros. Simple fixture swaps are generally fine, but anything touching plumbing lines, electrical, or structural elements typically requires licensed professionals and permits.
- The leak is inside a wall or ceiling — accessing it requires opening drywall.
- The pipe is corroded or crumbling — a section repair won't solve systemic corrosion.
- You can hear running water but can't locate the source.
- The pipe is part of a gas line — never attempt gas line repairs yourself.
Let Uncle AI diagnose it first.
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