Which factor best describes meter accuracy in residential water measurement?

• A. Accuracy relative to true volume
• B. Color of water
• C. Electrical resistance
• D. Brand of meter

Answer: (A)

Meter accuracy in residential water measurement is about how closely the amount the meter shows matches the actual water that flowed. The best description of this accuracy is the part that says it should be true volume, meaning the indicated volume is as close as possible to the real usage. Color of the water, electrical resistance, or the brand of the meter do not determine how accurately the meter measures the true volume. Colors or resistances might indicate other conditions, and brand can affect durability or cost, but they don’t define measurement accuracy. In practice, meters are calibrated to a standard so their readings track actual consumption within a specified tolerance, often within a few percent across typical flow ranges.