How many gallons of water to serve 150 people?

To determine how many gallons of water to serve 150 people, a common estimate is about half a gallon per person for a meal or event. Therefore, for 150 people, you would need approximately 75 gallons of water. However, this amount can vary based on the duration of the event and the types of activities involved. It's always a good idea to provide a bit extra to ensure everyone stays hydrated.