When to assist
I know I may be a bit late, but if the chick hasn't already hatched, do you have any pictures?
It is common for a chick to pip and rest for up to 24 hours. They do this once they start running out of oxygen inside the egg so they can breath, it gives them some more time to absorb the yolk and blood vessels.
You may have to keep the membrane moist in the shell so that he can hatch. A q-tip with bacitracin will keep it moist for some time, water will work, you just have to check it very frequently and be very careful not to get any in the chicks nostrils.
Let me know where he is and I will try to help you further. Here are some articles that have a ton of great information, they are long but well worth the time to read.
Oh yea, and it probably wasn't that big of a deal that there was no water in there from the beginning. I actually don't add any water until I see the first pip.