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MetricWater efficiency and water-loss mitigation

Water loss mitigated

Measurement answer

What this metric measures

Optional TNFD Annex 2 metric for the volume of water loss mitigated during the reporting period.

Specification

Metric specification

Result format
Single value
Unit
m³ — source-defined reporting unit
Reporting basis
Reporting period
Aggregation
Total volume of water loss classified as mitigated during the reporting period, using the disclosed mitigation method and without double counting interventions.
Pillar
Environmental
Topic
Water efficiency and water-loss mitigation
Controlled domain
Water and marine resources
Entity type
Metric

Reporting boundary

Reporting boundary and water-loss systems covered, as defined and disclosed by the reporting organization.

Verified source occurrences

Framework coverage

This is one canonical metric. The bindings below show every verified framework occurrence without creating duplicate metric pages. Edition, disclosure, role, and relationship remain source-specific.

  • Adopting Disclosure

    TNFD LEAP approach

    r022
    Publisher
    Taskforce on Nature-related Financial Disclosures
    Edition
    Version 1.1, October 2023
    Requirement
    Not Specified
    Relationship
    Reuses Canonical Metric
    Mapping outcome
    Reused
    Source locator
    TNFD LEAP Approach v1.1, Annex 1, Table 22, PDF page 163, metric row 2
    Open official framework source
  • Adopting Disclosure

    TNFD sector guidance

    WU.C3.1
    Publisher
    Taskforce on Nature-related Financial Disclosures
    Edition
    Version 1.0, June 2025
    Requirement
    Conditional
    Relationship
    Reuses Canonical Metric
    Mapping outcome
    Reused
    Source locator
    p.62, §3.2, Table 11, WU.C3.1
    Open official framework source
  • Adopting Disclosure

    TNFD Recommendations

    Source evidence
    Publisher
    Taskforce on Nature-related Financial Disclosures
    Edition
    September 2023
    Requirement
    Not Specified
    Relationship
    Defines Disclosure
    Mapping outcome
    Direct Evidence
    Source locator
    TNFD, Recommendations of the Taskforce on Nature-related Financial Disclosures, September 2023, Annex 2 additional metrics, A3.3, PDF page 91. | Extracted evidence: “Report the volume of water loss that has been mitigated, measured in cubic meters.”
    Open official framework source
  • Adopting Disclosure

    TNFD Recommendations

    5659b05f1b904b05dae0
    Publisher
    Taskforce on Nature-related Financial Disclosures
    Edition
    September 2023
    Requirement
    Not Specified
    Relationship
    Maps Source Identity
    Mapping outcome
    Published
    Source locator
    Page 91, metric A3.3 | TNFD, Recommendations of the Taskforce on Nature-related Financial Disclosures, September 2023, Annex 2 additional metrics, A3.3, PDF page 91. | Extracted evidence: “Report the volume of water loss that has been mitigated, measured in cubic meters.”
    Open official framework source

Value structure

Dimensions and units

Unit
m³ — source-defined reporting unit
Reporting basis
Reporting period

Unit meaning: Values use m³ under the disclosed TNFD Recommendations method, period, location and reporting boundary.

Published dimensions

  • water-loss system or source
  • site or location
  • geography
  • reporting period
  • reporting boundary
  • mitigation intervention
  • direct measurement or proxy/estimated method

Calculation method

Formula information

Status
Specified
Formula type
Other

Formula

Report the volume of water loss classified as mitigated during the reporting period under the disclosed method.

Apply the source-defined TNFD Recommendations method only within the disclosed location, ecosystem and value-chain boundary. A3.3 identifies a reportable volumetric outcome in cubic metres. It is distinct from water consumption, water withdrawal and total water discharge because it concerns loss classified as mitigated. The source does not provide a universal mitigation methodology, so method, boundary and attribution disclosures are required rather than inferred. It is published as an optional Annex 2 additional metric, not a core acceptance gate.

Variables

SymbolVariableDefinitionUnit
MWater loss mitigatedVolume of water loss that the reporting organization classifies as mitigated under its disclosed method.m³

Verified sources

Evidence and status sources

Sustopedia checked each record-specific claim directly against primary publisher material. Labels distinguish current measurement authority from future compatibility and corroborative, legal, edition, or method status context. Corroborative evidence can support a stated limitation but cannot establish the core measurement by itself.

Measurement evidence

  • Measurement evidenceChecked 27 August 2026

    Recommendations of the Taskforce on Nature-related Financial Disclosures

    Publisher
    Taskforce on Nature-related Financial Disclosures
    Edition
    September 2023
    Locator
    TNFD, Recommendations of the Taskforce on Nature-related Financial Disclosures, September 2023, Annex 2 additional metrics, A3.3, PDF page 91. | Extracted evidence: “Report the volume of water loss that has been mitigated, measured in cubic meters.”

    Supports: The official TNFD Recommendations source supports the identity, boundary and method basis of “Water loss mitigated”.

    Open official source

Use with context

Interpretation boundaries

Method disclosures required

Source-edition basis: Recommendations of the Taskforce on Nature-related Financial Disclosures, September 2023.

  • Define water loss and the criteria used to classify loss as mitigated.
  • Describe the measurement, calculation, estimation or proxy method used to quantify mitigated water loss.
  • Disclose the water-loss systems, sites, locations and reporting boundary covered.
  • Explain the treatment of baselines, timing, attribution and overlapping interventions where relevant.

Record-specific limitations

  • The extracted metric specifies a volume but does not prescribe a universal definition of water loss, mitigation, baseline, counterfactual, or attribution method.
  • Comparability depends on disclosure of the systems included, intervention timing and method used to quantify mitigation.
  • Volumes must not be double counted where multiple interventions affect the same water loss.

Interpret this metric with the stated reporting boundary, period convention, value shape, and unit. Results prepared with different boundaries or conventions may not be directly comparable.

Measurement evidence supports the core record-specific claims described above. Corroborative evidence can support limitations, while compatibility and status sources provide their separately labelled context. None of these cards by itself determines an organisation's legal applicability, filing readiness, assurance status, or compliance conclusion.