I replaced the water pump 4 months ago and have noticed a small amount of coolant always appears near the pipe for the heater hose
It would really suck to pull the water pump out again - and the heater pipe? I cranked that sucker down like a mofo when I installed it, so wasn't looking forward to undoing it again and checking it over.
This was a tiny leak and there was a slight chance the coolant was coming from the thermostat housing and running down, so pulled the thermostat housing off, cleaned it up and re-installed - damn, still coolant appearing near the heater hose
Took it off again and replaced with a new thermostat housing and no leak - don't have to take the water pump off - win!