Original sentence: Nuclear power plants use water internally to power steam turbines, and externally to transfer waste heat into the environment.The excess, or waste, heat must be removed from the plant by putting it into the surrounding environment
Edited sentence: Nuclear power plants use water internally to power steam turbines, and externally to dump waste heat into the environment.On average about 6 billion gallons (18,000 acre-ft, 23 million m³) of water are used per year to cool nuclear power plants.One acre-foot is approximately the amount of water used by a single suburban home per year.The excess, or waste, heat must be removed from the plant by dumping it into the surrounding environment