Cold water leak?

My 2005 Suzuki Forenza is having a psoriatic water leak. It doesn't leak all the time, doesnt get hot according to the gauge in which I know works & it only drips cold water. Can't be the water pump or cracked head & it's not close to the fire wall so I'm thinking it's not the heater core either....did I mention that I never run my a/c so....????