Ada County Operations Logo
Ada County Operations
A A A
Home > Energy & Sustainability > Water Use Index

Water Use Index

The current WUI chart for most of Ada County’s facilities. Generally, a low WUI signifies efficient water use.

What is a WUI?

A Water Use Index is a basic measure of a facility’s water use, in gallons, on a per square foot basis. Certain building types will always use more water than others. Cooling towers and irrigation are examples of systemic factors that can influence water use at a facility. Installation of more efficient water fixtures, and preemptive actions to avoid leaks, are examples of opportunities to improve building performance on the WUI.