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MetricWater pollution

PFAS concentration in incoming and outgoing water

Measurement answer

What this metric measures

Reports measured PFAS concentrations separately for incoming and outgoing water streams during the reporting period.

Specification

Metric specification

Result format
Structured table
Unit
ng/L — source-defined reporting unit
Reporting basis
Reporting period
Aggregation
Report concentrations separately for incoming and outgoing water; disclose the sampling and aggregation basis used.
Pillar
Environmental
Topic
Water pollution
Controlled domain
Pollution
Entity type
Metric

Reporting boundary

Incoming and outgoing water streams within the reporting entity's applicable water-utility operational boundary.

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 sector guidance

    Source evidence
    Publisher
    Taskforce on Nature-related Financial Disclosures
    Edition
    Final English sector guidance collection through August 2026 (17 documents)
    Requirement
    Not Specified
    Relationship
    Defines Disclosure
    Mapping outcome
    Direct Evidence
    Source locator
    p.62, §3.2, Table 11, WU.C2.0
    Open official framework source
  • Adopting Disclosure

    TNFD sector guidance

    WU.C2.0
    Publisher
    Taskforce on Nature-related Financial Disclosures
    Edition
    Version 1.0, June 2025
    Requirement
    Conditional
    Relationship
    Maps Source Identity
    Mapping outcome
    Published
    Source locator
    p.62, §3.2, Table 11, WU.C2.0
    Open official framework source

Value structure

Dimensions and units

Unit
ng/L — source-defined reporting unit
Reporting basis
Reporting period

Unit meaning: Values use ng/L under the disclosed TNFD sector-guidance method, reporting period and boundary.

Table fields and units

  • Water stream
  • PFAS analyte or analyte group
  • PFAS concentration
  • Sampling location or treatment stage
  • Sampling and aggregation basis

Published dimensions

  • Water-stream direction: incoming water or outgoing water
  • PFAS analyte or analyte group measured
  • Sampling location or treatment stage, where applicable

Disclosure method

Formula information

Status
Not applicable
Formula type
Structured Disclosure

Disclosure form

No single formula

Report the source-defined result with its stated fields and method disclosures. WU.C2.0 is a core sector metric that explicitly requires a reportable concentration outcome for PFAS in both incoming and outgoing water streams, with a specified unit of nanograms per litre. It is not the same construct as generic emissions-to-water or water-volume metrics because it measures PFAS concentration and preserves stream-direction fields.

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 30 August 2026

    TNFD additional sector guidance collection

    Publisher
    Taskforce on Nature-related Financial Disclosures
    Edition
    Final English sector guidance collection through August 2026 (17 documents)
    Locator
    p.62, §3.2, Table 11, WU.C2.0

    Supports: The official TNFD sector guidance supports the identity, boundary and method basis of “PFAS concentration in incoming and outgoing water”.

    Open official source

Use with context

Interpretation boundaries

Method disclosures required

Source-edition basis: TNFD sector guidance, Final English sector guidance collection through August 2026 (17 documents).

  • PFAS analytes, compounds or grouping included in the measurement.
  • Analytical method, laboratory method or data source used.
  • Sampling locations, sampling frequency and reporting-period aggregation basis.
  • Detection limits, treatment of non-detects and other material measurement limitations.

Record-specific limitations

  • Concentration does not measure total PFAS load without corresponding flow-volume data.
  • Comparability depends on the PFAS analytes covered, analytical detection limits, sampling locations and sampling frequency.
  • The extracted evidence does not prescribe a single sampling or concentration-aggregation method.

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.