How do you calculate your water usage in millions of Gallons?

Answer 1

-- Run the water supply to your house through a common utility water meter that reads

the aggregate flow in cubic feet.

-- Read the total on the meter at the beginning and ending of the appropriate

period of time under test.

-- Subtract the first reading from the second one to derive your water usage in

cubic feet during that period.

-- Multiply that number by 0.000007481 to calculate the same quantity in millions

of gallons.

Answer 2

To calculate water usage in millions of gallons, you would divide your total water usage in gallons by one million. For example, if your total water usage is 10 million gallons, you would simply write it as 10 million gallons.