The most common meter register records the flow in _________

• A. Liters
• B. Cubic feet or gallons
• C. Cubic meters
• D. Barrels

Answer: (B)

Meters measure the volume of water passing through a point, and in most U.S. systems the register shows that accumulated volume in units familiar for billing and engineering: cubic feet or gallons. One cubic foot equals about 7.4805 gallons, so meters may display either unit or provide both. Liters and cubic meters are metric units not typically used on standard U.S. water meters, and barrels aren’t a standard flow unit.