There is a well at the old Fire Warden's Cabin site. It is usually reliable as far as being full, but certainly not for purity. I would certainly use a high end filter in this area if not also iodining your take. About 20 years ago a dead rabbit was found in the well and was of course then "OFF LIMITS" for quite some time.If it were me I would carry more H2O than to use this well even with filtration.
If you are looking for the Well it is high on the mountain. After entering the woods once you have traversed Signal Ridge the Old Fire Warden's Cabin site is on your Right about a 1/4 mile or so. Facing the site the Well is on your Left.