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Plumbing Sounds

Pipes, water hammer, toilet, faucet, and drain noises. 30 diagnostic guides sorted by severity.

1 urgent 25 moderate 4 harmless
Urgent — Act Now
Sewer Line: Gurgling
#1 cause: Tree Root Intrusion
Act Now›
Moderate — Investigate Soon
Water Pipes: Banging (Water Hammer)
Investigate Soon›
Pipes: Banging When Toilet Flushes
#1 cause: Water Hammer From Fill Valve
Investigate Soon›
Pipes: Whistling
#1 cause: Worn Faucet Washer or Valve Seat
Investigate Soon›
Pipes: Humming
#1 cause: High Water Pressure
Investigate Soon›
Toilet: Gurgling
Investigate Soon›
Toilet: Running Constantly
Investigate Soon›
Toilet: Hissing
Investigate Soon›
Drain: Gurgling
#1 cause: Blocked Vent Stack
Investigate Soon›
Shower Drain: Gurgling
#1 cause: Partial Clog in Drain Line
Investigate Soon›
Toilet: Foghorn Sound
#1 cause: Vibrating Fill Valve Diaphragm
Investigate Soon›
Pipes: Groaning
#1 cause: High Water Pressure
Investigate Soon›
Pipes: Vibrating
Investigate Soon›
Kitchen Sink: Gurgling
Investigate Soon›
Water Heater: Knocking
Investigate Soon›
Toilet: Bubbling When Shower Runs
Investigate Soon›
Bathtub Drain: Gurgling
Investigate Soon›
Water Heater: Whistling
Investigate Soon›
Toilet: Whistling After Flush
Investigate Soon›
Hot Water Heater: Banging
Investigate Soon›
Main Water Line: Humming
Investigate Soon›
Shower: Squealing When Running
Investigate Soon›
Pipes: Knocking With Hot Water
Investigate Soon›
Toilet: Making Noise Randomly
Investigate Soon›
Dishwasher Drain: Gurgling
Investigate Soon›
Outdoor Faucet: Hammering
Investigate Soon›
Low Priority — Usually Harmless
Pipes: Rattling in Wall
#1 cause: Loose Pipe Straps
Usually Harmless›
Faucet: Whistling
#1 cause: Worn Washer or Seat
Usually Harmless›
Hot Water Pipes: Ticking
#1 cause: Thermal Expansion Against Framing
Usually Harmless›
Water Softener: Noise During Regeneration
Usually Harmless›