The answer to 'water heater leaking water' is that there are several common causes, including a loose connection, a faulty pressure relief valve, or a crack in the tank. Symptoms may include water pooling around the heater, low water pressure, or a drop in water temperature.
For minor leaks, you may be able to tighten fittings or replace the pressure relief valve yourself. However, if the leak is significant or the tank is cracked, it's best to call a professional plumber to diagnose and repair the issue. Attempting to fix a major leak yourself could lead to further damage or even flooding.