What is the weight of a gallon of water?

The weight of a gallon of water is commonly recognized as approximately 8.33 pounds. This figure is based on the fact that one U.S. gallon of water weighs this amount at standard temperature and pressure conditions. The 8.33 pounds measurement comes into play when dealing with hydraulic calculations and water-related systems, such as those found in high pressure piping scenarios.

Understanding the weight of water is crucial for engineers and technicians when calculating system loads, ensuring proper support for piping systems, and assessing pressure dynamics in various fluids. The other weights provided do not reflect the standard weight of water in a gallon, making 8.33 pounds the correct choice for this question.