Mummies Alive! (1997) 1x25

Scarab summons Nuhn who starts drying up the city's water supply. With the city out of water, Scarab is able to sell water at $100 a bottle and bring in lots of cash. The Mummies put Kahti in one of the bottles to lead them to Scarab. Finally, they drive out to Death Valley with Nuhn following. Can you say ""evaporation""?