For domestic cold water meters, what is the smallest value unit that must be indicated?

For domestic cold water meters, the smallest value unit that must be indicated is typically 10 gallons. This standard is in place to ensure that households are able to accurately measure and bill for water usage at a common increment that aligns with typical consumption patterns. Using a unit of 10 gallons provides a reasonable balance between precision and practicality in household water measurement, allowing residents to keep track of their water consumption without excessive complexity or confusion.

This measurement is often established by regulatory standards to promote uniformity across various installations and to facilitate clear communication to customers regarding their water usage. Smaller increments like 5 gallons might not be practical for billing purposes and could lead to unnecessary administrative burdens on water service providers.