Where is the leak coming from?
Leaks near the top usually involve the cold-inlet or hot-outlet fittings, the temperature and pressure (T&P) relief valve, or the anode rod port. Water at the bottom may come from the drain valve, a heating element gasket, or the tank itself.
Knowing the source matters. Fittings and valves are often repairable. Water escaping from the tank body usually points to internal corrosion.
Repair or replace?
A dripping valve or loose connection is often a simple repair. A leaking tank body generally means replacement is the safer choice. Age matters too: tank units commonly last 8 to 12 years, and Prescott hard water can shorten that. Regular maintenance helps prevent repeat problems.
What to do while you wait
- Shut off the cold-water supply to the heater, if you can do it safely.
- Turn off power at the breaker, or set the gas control to off.
- Move belongings away and place a pan or towels to limit damage.
- Do not touch wet electrical parts. If you smell gas, leave the home and call your gas utility or 911.
- Call us and describe where the water is coming from.
Not sure it is the heater? A hidden pipe leak can look similar. See leak detection and shutoff valves.
Common questions
Is a leaking water heater an emergency?
It can be. Active leaks can damage your home quickly, so shut off the water supply and power or gas, then call right away. A slow drip from a valve is less urgent but should not be ignored.
Can a leaking tank be repaired?
Usually not. Leaks from the tank body generally mean replacement, while leaks from fittings or valves can often be repaired.