GRESB water performance indicator data sources

Review a table that outlines how IBM® Envizi ESG Suite assigns corresponding data source values to GRESB water performance indicator fields in the GRESB Asset Summary.

Data requirements for water performance indicators are similar in structure to energy performance indicators. The only difference is that water does not have a breakdown by data type as energy does, for example, fuel, district heating and cooling, and electricity.

The following table has four sections:

  • Data availability, which is based solely on the months of data captured or accrued in Envizi.
  • Whole building reporting, which will populate floor area coverage and maximum floor area based on recorded asset size.
  • Sub-building space reporting, which uses location settings captured in the Floor Area Coverage pages if available.
  • Water consumption that occurs outside of the sub-building is reported if the relevant accounts or meters are explicitly tagged.

Floor areas for water use the same location settings that are configured in the Reporting Characteristics tab and that are used for energy sub-building maximum floor areas.

In the Envizi data source column, data sources are listed in order of priority. The system assigns the first existing data source in the list.
Table 1. GRESB water performance indicator fields and corresponding Envizi data sources
GRESB field Envizi data source
Data Availability - From - (yyyy-mm-dd) First day of the month from the earliest available data.
Data Availability - To - (yyyy-mm-dd) Last day of the month from the latest available data.
Whole Building - - Consumption (m3)

All water consumption in the related building space, within the related data type category of water.

See more information about how Envizi classifies activity data.

Whole Building - - Floor Area Covered If activity data exists, floor area coverage location setting, asset size (AC), tagged whole building floor area account
Whole Building - - Maximum Floor Area If a reporting period has been defined and no water data is available within the period, then the system leaves this field blank. If water data exists within the reporting period, asset size (AC), tagged floor area account.

If a reporting period has not been defined, regardless of the availability of water data, asset size (AC), tagged floor area account.

Base Building - Shared Services - Consumption (m3) All water consumption in the related building space, within the related data type category of water.
Base Building - Shared Services - Floor Area Covered If activity data exists, floor area coverage location setting, max coverage (assumes full coverage)
Base Building - Shared Services - Maximum Floor Area If activity data exists, floor area location setting (RC), if blank then tagged floor area account.
Base Building - Common areas - Consumption (m3) All water consumption in the related building space, within the related data type category of water.
Base Building - Common areas - Floor Area Covered If activity data exists, floor area coverage location setting, max coverage (assumes full coverage)
Base Building - Common areas - Maximum Floor Area If activity data exists, floor area location setting (RC), if blank then tagged floor area account.
Tenant Spaces - Landlord Controlled - Consumption (m3) All water consumption in the related building space, within the related data type category of water.
Tenant Spaces - Landlord Controlled - Floor Area Covered If activity data exists, floor area coverage location setting, max coverage (assumes full coverage)
Tenant Spaces - Landlord Controlled - Maximum Floor Area If activity data exists, floor area location setting (RC), if blank then tagged floor area account.
Tenant Spaces - Tenant Controlled - Consumption (m3) All water consumption in the related building space, within the related data type category of water.
Tenant Spaces - Tenant Controlled - Floor Area Covered If activity data exists, floor area coverage location setting, max coverage (assumes full coverage)
Tenant Spaces - Tenant Controlled - Maximum Floor Area If activity data exists, floor area location setting (RC), if blank then tagged floor area account.
Outdoor / Exterior areas / Parking - Landlord Controlled - Consumption (m3)
All water consumption, within tagged accounts or meters, within related data type category of water.
Note: Applies only to tagged accounts/meters.
Outdoor / Exterior areas / Parking - Tenant Controlled - Consumption (m3)
All water consumption, within tagged accounts or meters, within related data type category of water.
Note: Applies only to tagged accounts/meters.
Reused and recycled - On-site - Water reuse - (m3)
All water consumption, within tagged accounts or meters, within related data type category of water.
Note: Applies only to tagged accounts/meters.
Reused and recycled - On-site - Water Capture - (m3)
All water consumption, within tagged accounts or meters, within related data type category of water.
Note: Applies only to tagged accounts/meters.
Reused and recycled - On-site - Water Extraction - (m3)
All water consumption, within tagged accounts or meters, within related data type category of water.
Note: Applies only to tagged accounts/meters.
Reused and recycled - Off-site - Water Purchased - (m3)
All water consumption, within tagged accounts or meters, within related data type category of water.
Note: Applies only to tagged accounts/meters.