• Environment

Operational Impact

  • Environmental Policies & Performance

Water Conserved (OI4015)

Volume of reduced water usage achieved as a result of the organization's water conservation efforts during the reporting period.
Reporting format
Unit of Measure (PD1602)
Metric type
Metric level
IRIS metric citation
IRIS, 2016. Water Conserved (OI4015). v4.0.


Organizations should footnote all assumptions used. See usage guidance for further information.

Usage Guidance

  • Conservation efforts could include low-flow toilets, rainwater collection facilities, improved manufacturing processes, etc. This does not include overall reduction in water usage that results from reduced organizational activities (e.g., partial outsourcing).
  • Organizations should footnote all assumptions used, including the basis for calculating reductions in water usage (such as base year or baseline) and the rationale for choosing it. For example, if the reporting period is annual, organizations should report on the difference in water use between the current year and previous year. Additionally, organizations are encouraged to footnote water conserved as a percentage of total water consumed by the organization.
  • Organizations are encouraged to report this metric in conjunction with Water Conservation Strategy (OI9326).