The answer to 'water heater leaking water' is that a leaking water heater is a common plumbing problem that can be caused by a variety of issues, including a faulty temperature and pressure (T&P) relief valve, a cracked tank, or corrosion. Symptoms may include water pooling around the base of the heater, dripping from the T&P valve, or decreased hot water supply.
In many cases, a leaking water heater can be repaired by a homeowner, such as replacing the T&P valve or tightening connections. However, if the tank is cracked or there is significant corrosion, it's best to call a professional plumber to evaluate the situation and determine if the water heater needs to be replaced.