How many gallons of gasoline drip from the nozzle on to the ground each year from people pumping gas in the US

Answer 1

An exact answer would be hard to come across, but my educated guess would be 420,305 gallons at a rate of 1151.52 gallons per day (explanation below). However, most of this gasoline probably evaporates very quickly and likely never seeps into the ground through cement or blacktop. Larger spills from fuel delivery drivers overfilling tanks, pipeline damage, or overflow at the terminal or rack account for the most environmentally hazardous spillage.

How I came up with the number of gallons:
The national U.S. average for gasoline sales is 384.7 million gallons sold per day (gasoline only -- does not include diesel).

I estimated about 2 drops spilled for every 10 gallons pumped, which would be, of course, 76.94 million drops per day nationally.

1 gallon contains approximately 66,816 drops of gasoline (.5 oz of water is appx. 261 drops).
76.94 million divided by 66,816 is 1151.52.
1151.52 x 365 days/year =420,304.8.