Water heaters can spring many different kinds of leaks. Though you might not think a leak is something to worry about, according to Plumbing Manufacturers International, 13.7% of all water use is the result of leaks. If you notice your water heater is losing water, take a closer look. Sometimes, the internal tank has a crack, or one of the pipe fittings has become loose. Try to see where the leak is coming from to better explain the issue to water heater repair services over the phone. While leaks with a definite source can often be patched or repaired, a widespread leaking problem could mean that your whole system needs replacement.