By PlumberDallas.com editorialUpdated
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Common causes

Temperature and pressure relief valve

Discharge can mean excess pressure or a failing valve.

Drain valve

Loose or worn.

Supply connections

Fittings at the top.

Tank body

Corrosion through the tank cannot be repaired.

What you can check yourself

  • Turn off the cold water supply valve to the heater.
  • Turn off the gas or the breaker.
  • Find where the water comes from: top, valve, or bottom.
  • Keep the drain pan clear.

When to call a plumber

Call promptly. A tank leak usually gets worse.

How a plumber diagnoses it

A plumber identifies the source; fittings and valves can be replaced, a leaking tank means replacement.

What it may cost

See the water heater replacement cost guide for published price ranges and cost factors.

Ready for a professional diagnosis? Learn about water heater repair in Dallas and request help.