Yes, you can drink tap water in Disney World. Disney World gets its water from Orlando's municipal water treatment, just like the rest of the homes and businesses in the City. So, the tap water in the hotels in Disney World is safe to drink, but, like all of Orlando's water, may have an unpleasant sulfur (rotten egg) smell and taste. Most hotels and Disney parks have filtered drinking water fountains that you can use to fill your refillable mugs and bottles if you find the tap water taste unbearable.