How much does water weigh per gallon?

Water weighs approximately 8.34 pounds per gallon at its maximum density, which occurs at around 39.2 degrees Fahrenheit. This specific weight is relevant for various applications, particularly in firefighting, where understanding the weight of water is crucial for calculations involving water supply, hose loads, and tank capacities.

When firefighters work with water to extinguish fires, knowing that each gallon weighs 8.34 pounds allows them to plan effectively and ensure that equipment can handle the total weight of water used during operations. This knowledge is essential not only for the effective deployment of firefighting strategies but also for safety considerations related to equipment limits and personnel physical capabilities when transporting water.