A leaking water heater should be treated as a water-damage risk, not merely an inconvenience. First identify whether water is coming from a connection, valve, tank seam, drain opening, or nearby piping. If the source is unclear or water is spreading, stop using the unit and arrange an assessment.
Find the Likely Source
Look for water around the base, fittings, temperature and pressure relief valve, drain valve, supply connections, and nearby pipes. Condensation or a leak from another fixture can appear to come from the heater. Do not remove panels or touch wet electrical components while standing in water.
Reduce Immediate Risk
If safe and accessible, turn off the cold-water supply above the heater. For an electric unit, switch off the circuit only if the area is dry and you can do so safely. For a gas unit, follow the manufacturer instructions and do not create a flame or gas risk. When in doubt, leave the equipment alone and call for help.
Repair or Replacement
A connection or valve may be repairable, while corrosion at the tank seam often points to replacement rather than a lasting patch. Age, sediment, installation condition, water quality, and available space can affect the recommendation. A provider should explain whether the repair addresses the source or only contains it temporarily.
Information to Gather
Note whether hot water remains available, how fast the leak is growing, and whether the discharge is clear, rusty, or strongly odorous. Photographing the area from a dry location can help explain the problem. Keep the path to the heater clear and mention any recent maintenance or unusual noises.
What May Be Checked
The visit may include checking shutoff valves, fittings, relief components, electrical or gas connections, venting where relevant, the tank exterior, and nearby piping. The exact checks depend on the heater type and leak location. Never operate a relief valve or bypass a safety component just to test it.
Next Step
Contact a local provider promptly if water is pooling, the tank is actively leaking, hot water is unavailable, or the leak is near electrical equipment. Ask what must be shut off, whether temporary containment is possible, and what conditions would make replacement more practical than repair.