How many pounds does one gallon of water weigh?

One gallon of water weighs approximately 8.34 pounds at standard temperature and atmospheric pressure. This value is significant in water and wastewater management because it helps water operators calculate flow rates, chemical dosing, and treatment processes accurately.

Understanding the weight of water is essential for various calculations such as determining the total weight of water in tanks, understanding the load on infrastructure, and aiding in the compliance of water utility guidelines. The weight of one gallon being 8.34 pounds is a widely accepted standard in the water industry, making it a critical figure for operators to memorize and apply in their daily tasks.

In contrast, the other weights listed do not reflect the weight of a gallon of water under standard conditions, highlighting the importance of using precise measurements in water treatment and distribution scenarios.