High water temperature (above 200°F) can be a sign of a failing heating element. If you notice your water heater has been producing steam or hot water, it may be time to replace it.
Loose connections or worn-out gaskets can cause the tank to leak. If you hear gurgling sounds coming from your water heater or see condensation on the sides, it's likely a sign of leakage.
If your water heater is not producing hot water at all, even after turning it on, it may be due for repair. Check your circuit breaker or fuse box to ensure that the breaker hasn't tripped or the fuse isn't blown.