Water agencies use water meters that commonly measure water use in CCF or hundred cubic feet. The first “C” stands for centum which means hundred in latin.
Because it can be difficult to imagine this volume, most people find it easier to think in gallons. The conversion of CCF to gallons is:
1 CCF = 748 gallons
748 gallons can also be hard for people to visualize. As a rule of thumb, each 100 square feet of irrigated landscape receives about 5 CCF per year. Another way to conceptualize a CCF is by cost; most agencies in our program charge between $2 and $6 per CCF, so the annual water cost per 100 square feet of irrigated area is $10 to $30.
Some agencies measure water use in 1,000 gallons or TG.