EVS-EN 50600-4-9:2022

This document specifies the Water Usage Effectiveness (WUE) as a KPI for quantifying the water consumption of a data centre during use phase of the data centre life cycle.
This document:
a)  defines the Water Usage Effectiveness (WUE) of a data centre;
b)  introduces WUE measurement categories;
c)  describes the relationship of this KPI to a data centre’s infrastructure, information technology equipment and information technology operations;
d)  defines the measurement, the calculation and the reporting of the parameter;
e)  provides information on the correct interpretation of the WUE.