A leaking water heater can be a minor connection problem or a sign that the tank or a safety component has failed. Safety comes first: control water and power or fuel only when you can do so safely, then arrange an assessment.
Find the Likely Source
Water around the base may come from the tank, a drain valve, the temperature and pressure relief connection, supply fittings, or condensation. A leak from the tank itself often points to replacement rather than a durable tank repair. Do not assume the lowest visible point is the source because water can travel along the top or sides.
Immediate Safety Steps
If water is actively spreading, turn off the cold-water supply to the heater if the valve operates normally. For an electric unit, switch off its circuit before touching wet equipment. For gas equipment, follow the manufacturer guidance and do not create a flame or adjust gas controls if you are uncertain. Leave unsafe conditions to a professional.
What to Observe
Note whether the water is hot, how quickly it is accumulating, and whether the leak changes when fixtures run. Look for rust, a bulging tank, wet insulation, loose fittings, or discharge from the relief pipe. Do not remove panels or cap a relief valve. Photos taken from a dry, safe position can be useful.
Repair or Replacement
Repair may be reasonable for a valve or connection, while a corroded or leaking tank commonly requires replacement. Age, capacity, fuel type, installation space, venting, code requirements, and household demand can affect the recommendation. Ask whether the proposed solution addresses the source or only controls the visible water.
Preparing to Call
Keep the area accessible and remove stored items from possible water damage. Have the model information available if it can be read safely. Tell the provider whether hot water is still available and whether a relief valve is discharging. Do not restart equipment that has been submerged or damaged.
Next Step
A local provider can assess the source, isolate the unit, and explain the practical options. If the leak is worsening, water is near electrical equipment, or the tank is bulging, treat the situation as urgent. Contact help with the heater type, location, symptoms, and any safe shutoff already completed.