A Water Performance Indicator, or WPI, is a metric used to understand how efficiently a facility, process or organization uses water.

What is a Water Performance Indicator?

A Water Performance Indicator connects water consumption with a meaningful driver such as production, occupancy, treated water volume, operating hours or facility size. It helps teams understand whether water use is efficient rather than only measuring total water consumption.

Why WPIs matter

Water consumption can change because production increases, occupancy changes, processes run longer, leaks occur or operating conditions shift. WPIs help teams compare water performance more fairly and identify unusual consumption patterns.

Common WPI examples

Examples include cubic meters of water per unit produced, cubic meters per square meter, cubic meters per occupant, cubic meters per operating hour, or kWh per cubic meter pumped or treated. In water utilities, indicators can also connect water performance with pumping energy.

How WPIs support improvement

WPIs help teams benchmark facilities, identify high-consumption areas, track water saving actions, evaluate process improvements and connect water performance with energy and carbon outcomes.

Carbon Ninja context

Carbon Ninja supports water performance workflows by helping organizations track WPIs, benchmark facilities, manage water saving opportunities and report water, energy and carbon impacts together.

Practical examples

m³ / unit produced
m³ / occupant
m³ / m²
kWh / m³ pumped

How this connects to Carbon Ninja

Carbon Ninja is designed to connect technical concepts with real workflows: data collection, indicators, baselines, measurements, opportunities, actions, responsibilities and reporting. This makes technical terms useful for daily performance management, not only documentation.