1. The fresh water tank drain should be somewhere under or very near to the fresh water tank itself. Generally the tank is located within just a few feet of the fill hatch. On Keystones, the fw drain also seems to usually be on the street side of the trailer fairly close to the edge of the unit.
2. No, the cold water low point is completely separate from the fresh water drain. You should have a total of three drains: the hot and cold low point drain are usually together, and the fresh water tank drain is completely separate.
'11 Cougar 326MKS loaded with mods
'12 Ford F250 SuperCab 6.7 PowerStroke Diesel
KD2IAT (146.520) GMRS:
WQPG808 (462.675 TPL 141.3)