Loose or leaking connection
Supply or outlet fittings may drip near the top of the tank.
Plumbing troubleshooting
Water Heater Leaking? How to Respond Safely
Water near a water heater may come from a fitting, relief valve, drain valve, or tank. Keep clear of hot water and electrical components.
Common causes
Relief or drain valve
Water at a valve needs diagnosis; never cap a temperature-and-pressure relief valve.
Tank corrosion
Water escaping from the tank body often means the heater needs replacement.
Safe checks you can make
- Keep people away from hot water and nearby electrical hazards.
- If safe, shut off the cold-water supply to the heater.
- Photograph the source of the leak from a safe distance.
When to call a professional
Call a plumber promptly for any active heater leak. If gas is smelled, leave the building and contact the gas utility or emergency services.
Explore other plumbing problems
This guide is general information, not a diagnosis. If water is near electricity, avoid the area and get immediate professional help.