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GRI 303: Water and Effluents·Disclosure GRI 303-3

Water withdrawal

Practical guidance for preparing this disclosure. Use this card to identify the information to prepare, verify claims and organise supporting evidence. For exact requirements, always refer to the official Global Reporting Initiative source.

Legal status

GRI 303: Water and Effluents 2018 remains the applicable GRI Topic Standard for water-related reporting and is effective for reports or other materials published on or after 1 January 2021.

Published passport

Last reviewed 2026-08-01
RK Reviewed by Dr Ross KurinkoLinkedIn Strategic ESG Advisor · IFRS S1 & S2 / GRI / ESRS expert GRI Certified Global Trainer · PhD, University of Cambridge · ESG-AI expert 15+ years on FTSE 100 & Fortune Global 500 disclosures Canary Wharf, London LRA educational guidance · Not issued or endorsed by Global Reporting Initiative

Standard

GRI 303: Water and Effluents

Disclosure GRI 303-3 · 2018

Effective

2021-01-01

Official source: Open ↗

Last reviewed

2026-08-01

LRA educational guidance · Not issued or endorsed by Global Reporting Initiative

Disclosure focus

Disclosure 303-3 requires an organization to report total water withdrawal from all areas and separately from all areas with water stress, in megaliters. Water withdrawal is classified as surface water, groundwater, seawater, produced water or third-party water. Collected rainwater is classified as surface water, while municipal and utility water is classified as third-party water.

For every applicable source, the organization reports the volume of freshwater, defined as water with total dissolved solids of 1 000 mg/L or less, and other water, defined as water with total dissolved solids above 1 000 mg/L.

For third-party water withdrawn in areas with water stress, the organization additionally reports the original source used by the supplier: surface water, groundwater, seawater or produced water. The organization requests this information from the third-party supplier.

Areas with water stress are identified using publicly available and credible tools or methodologies, with assessment conducted at least at catchment level. The methodology, tool version, thresholds, assumptions and limitations are disclosed.

Internally recycled or recirculated water is not counted as a new withdrawal. It can be reported separately as additional information on water reuse.

GRI additionally recommends reporting source-level withdrawal for each facility in areas with water stress and the total water withdrawal of suppliers with significant water-related impacts in such areas. These are recommendations and should be distinguished from the mandatory requirements.

This LRA educational guidance supports disclosure preparation. For the exact requirements, always refer to the official Global Reporting Initiative source.

Before you start

Before you start

A quick mental checklist before you prepare this disclosure — tick each as you settle it.

Preparation

Key information to prepare

Preparation field What to capture Evidence hint Owner
Reporting period Required. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting reporting period. Sustainability Reporting / data owner
Organizational scope Required contextual information. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting organizational scope. Sustainability Reporting / data owner
Total withdrawal from all areas Required. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting total withdrawal from all areas. Sustainability Reporting / data owner
Total withdrawal from stressed areas Required. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting total withdrawal from stressed areas. Sustainability Reporting / data owner
Unit — ML Required. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting unit — ml. Sustainability Reporting / data owner
Surface water Required where applicable. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting surface water. Environment / Water / Sustainability Reporting
Groundwater Required where applicable. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting groundwater. Environment / Water / Sustainability Reporting
Seawater Required where applicable. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting seawater. Environment / Water / Sustainability Reporting
Produced water Required where applicable. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting produced water. Environment / Water / Sustainability Reporting
Third-party water Required where applicable. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting third-party water. Environment / Water / Sustainability Reporting
Municipal water classified as third-party Required methodological control. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting municipal water classified as third-party. Environment / Water / Sustainability Reporting
Harvested rainwater classified as surface water Required methodological control. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting harvested rainwater classified as surface water. Environment / Water / Sustainability Reporting
Internal recycled water excluded from withdrawal Required methodological control. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting internal recycled water excluded from withdrawal. Environment / Water / Sustainability Reporting
Freshwater ≤1 000 mg/L TDS Required. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting freshwater ≤1 000 mg/l tds. Environment / Water / Sustainability Reporting
Other water >1 000 mg/L TDS Required. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting other water >1 000 mg/l tds. Environment / Water / Sustainability Reporting
TDS split for all areas Required. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting tds split for all areas. Sustainability Reporting / data owner
TDS split for stressed areas Required. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting tds split for stressed areas. Sustainability Reporting / data owner
Original source of third-party stressed water Required. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting original source of third-party stressed water. Environment / Water / Sustainability Reporting
Publicly available credible water-stress tool Required. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting publicly available credible water-stress tool. Environment / Water / Sustainability Reporting
Catchment-level assessment Required. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting catchment-level assessment. Environment / Water / Sustainability Reporting
Tool version and date Required contextual information. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting tool version and date. Sustainability Reporting / data owner
Stress threshold Required contextual information. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting stress threshold. Sustainability Reporting / data owner
Measurement methodologies Required. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting measurement methodologies. Sustainability Reporting / data owner
Assumptions Required. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting assumptions. Sustainability Reporting / data owner
Estimates clearly identified Required where applicable. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting estimates clearly identified. Sustainability Reporting / data owner
Meter and invoice reconciliation Required assurance control. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting meter and invoice reconciliation. Sustainability Reporting / data owner
All-area/source reconciliation Required assurance control. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting all-area/source reconciliation. Sustainability Reporting / data owner
Stressed-area subset reconciliation Required assurance control. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting stressed-area subset reconciliation. Sustainability Reporting / data owner
Third-party source reconciliation Required assurance control. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting third-party source reconciliation. Sustainability Reporting / data owner
Facility-level stressed-area data Recommended. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting facility-level stressed-area data. Sustainability Reporting / data owner
Supplier withdrawal in stressed areas Recommended where applicable. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting supplier withdrawal in stressed areas. Procurement / Finance / Sustainability Reporting
Acquisitions and disposals methodology Required where applicable. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting acquisitions and disposals methodology. Sustainability Reporting / data owner
Link to GRI 3-3 Required contextual control. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting link to gri 3-3. Sustainability Reporting / data owner
Link to GRI 303-1, 303-4 and 303-5 Necessary for consistency. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting link to gri 303-1, 303-4 and 303-5. Sustainability Reporting / data owner
Reason for omission Required in GRI content index where applicable. Capture and reconcile this item using the scope, defined terms and calculation basis in the reviewed Disclosure focus. Approved source records, calculation files, reconciliations and review evidence supporting reason for omission. Sustainability Reporting / data owner
+ Show GRI 303-3 sub-elements (LRA working checklist)

How to prepare it

Disclosure 303-3 requires an organization to report total water withdrawal from all areas and separately from all areas with water stress, in megaliters. Water withdrawal is classified as surface water, groundwater, seawater, produced water or third-party water. Collected rainwater is classified as surface water, while municipal and utility water is classified as third-party water.
Collect and reconcile the records for: Reporting period; Organizational scope; Total withdrawal from all areas; Total withdrawal from stressed areas; Unit — ML; Surface water; Groundwater; Seawater; Produced water; Third-party water; Municipal water classified as third-party; Harvested rainwater classified as surface water; Internal recycled water excluded from withdrawal; Freshwater ≤1 000 mg/L TDS; Other water >1 000 mg/L TDS; TDS split for all areas; TDS split for stressed areas; Original source of third-party stressed water; Publicly available credible water-stress tool; Catchment-level assessment; Tool version and date; Stress threshold; Measurement methodologies; Assumptions; Estimates clearly identified; Meter and invoice reconciliation; All-area/source reconciliation; Stressed-area subset reconciliation; Third-party source reconciliation; Facility-level stressed-area data; Supplier withdrawal in stressed areas; Acquisitions and disposals methodology; Link to GRI 3-3; Link to GRI 303-1, 303-4 and 303-5; Reason for omission.
Apply Disclosure 303-3 when the related topic is material and this disclosure is relevant to the organisation's impacts, or when an applicable GRI Sector Standard identifies it for reporting.
Draft the response using the defined terms shown in the disclosure focus; do not substitute broader internal labels.
Review the final wording against every requirement and the supporting governance or data records before sign-off.

Request the data

Request the disclosure evidence

Translate the disclosure into an internal business question — then adapt it to your organisation's own language.

Provide the reporting-period records and reconciliations for Disclosure 303-3: Reporting period; Organizational scope; Total withdrawal from all areas; Total withdrawal from stressed areas; Unit — ML; Surface water; Groundwater; Seawater; Produced water; Third-party water; Municipal water classified as third-party; Harvested rainwater classified as surface water; Internal recycled water excluded from withdrawal; Freshwater ≤1 000 mg/L TDS; Other water >1 000 mg/L TDS; TDS split for all areas; TDS split for stressed areas; Original source of third-party stressed water; Publicly available credible water-stress tool; Catchment-level assessment; Tool version and date; Stress threshold; Measurement methodologies; Assumptions; Estimates clearly identified; Meter and invoice reconciliation; All-area/source reconciliation; Stressed-area subset reconciliation; Third-party source reconciliation; Facility-level stressed-area data; Supplier withdrawal in stressed areas; Acquisitions and disposals methodology; Link to GRI 3-3; Link to GRI 303-1, 303-4 and 303-5; Reason for omission. Include scope, definitions, methods, assumptions, limitations, owners and approvals.

Use the organisation's own role and document names, but preserve the defined GRI terms and the scope described above.

Better request

Provide the reporting-period records and reconciliations for Disclosure 303-3: Reporting period; Organizational scope; Total withdrawal from all areas; Total withdrawal from stressed areas; Unit — ML; Surface water; Groundwater; Seawater; Produced water; Third-party water; Municipal water classified as third-party; Harvested rainwater classified as surface water; Internal recycled water excluded from withdrawal; Freshwater ≤1 000 mg/L TDS; Other water >1 000 mg/L TDS; TDS split for all areas; TDS split for stressed areas; Original source of third-party stressed water; Publicly available credible water-stress tool; Catchment-level assessment; Tool version and date; Stress threshold; Measurement methodologies; Assumptions; Estimates clearly identified; Meter and invoice reconciliation; All-area/source reconciliation; Stressed-area subset reconciliation; Third-party source reconciliation; Facility-level stressed-area data; Supplier withdrawal in stressed areas; Acquisitions and disposals methodology; Link to GRI 3-3; Link to GRI 303-1, 303-4 and 303-5; Reason for omission. Include scope, definitions, methods, assumptions, limitations, owners and approvals.

Draft your disclosure

Notes that turn data into a disclosure

LRA training templates — adapt them to your organisation, and check the official source before sign-off.

Method note

GRI additionally recommends reporting source-level withdrawal for each facility in areas with water stress and the total water withdrawal of suppliers with significant water-related impacts in such areas. These are recommendations and should be distinguished from the mandatory requirements.

Context note

Keep mandatory Requirements, GRI recommendations and additional LRA preparation controls clearly distinguished. Use a GRI 1 reason for omission where an applicable requirement cannot be reported.

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Preparation tools & forms

Professional preparation tools for GRI 303-3 — free with an LRA Community membership. Register once (it's free) and every download unlocks, together with the Disclosure Library, templates and the LRA AI Assistant.

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Assurance readiness

For each claim, check the evidence

Claim Risk Evidence to check
Reporting period is reported accurately and completely.The response omits, misclassifies or overstates reporting period.Approved source records, calculation files, reconciliations and review evidence supporting reporting period.
Organizational scope is reported accurately and completely.The response omits, misclassifies or overstates organizational scope.Approved source records, calculation files, reconciliations and review evidence supporting organizational scope.
Total withdrawal from all areas is reported accurately and completely.The response omits, misclassifies or overstates total withdrawal from all areas.Approved source records, calculation files, reconciliations and review evidence supporting total withdrawal from all areas.
Total withdrawal from stressed areas is reported accurately and completely.The response omits, misclassifies or overstates total withdrawal from stressed areas.Approved source records, calculation files, reconciliations and review evidence supporting total withdrawal from stressed areas.
Unit — ML is reported accurately and completely.The response omits, misclassifies or overstates unit — ml.Approved source records, calculation files, reconciliations and review evidence supporting unit — ml.
Surface water is reported accurately and completely.The response omits, misclassifies or overstates surface water.Approved source records, calculation files, reconciliations and review evidence supporting surface water.
Groundwater is reported accurately and completely.The response omits, misclassifies or overstates groundwater.Approved source records, calculation files, reconciliations and review evidence supporting groundwater.
Seawater is reported accurately and completely.The response omits, misclassifies or overstates seawater.Approved source records, calculation files, reconciliations and review evidence supporting seawater.
Produced water is reported accurately and completely.The response omits, misclassifies or overstates produced water.Approved source records, calculation files, reconciliations and review evidence supporting produced water.
Third-party water is reported accurately and completely.The response omits, misclassifies or overstates third-party water.Approved source records, calculation files, reconciliations and review evidence supporting third-party water.
Municipal water classified as third-party is reported accurately and completely.The response omits, misclassifies or overstates municipal water classified as third-party.Approved source records, calculation files, reconciliations and review evidence supporting municipal water classified as third-party.
Harvested rainwater classified as surface water is reported accurately and completely.The response omits, misclassifies or overstates harvested rainwater classified as surface water.Approved source records, calculation files, reconciliations and review evidence supporting harvested rainwater classified as surface water.
Internal recycled water excluded from withdrawal is reported accurately and completely.The response omits, misclassifies or overstates internal recycled water excluded from withdrawal.Approved source records, calculation files, reconciliations and review evidence supporting internal recycled water excluded from withdrawal.
Freshwater ≤1 000 mg/L TDS is reported accurately and completely.The response omits, misclassifies or overstates freshwater ≤1 000 mg/l tds.Approved source records, calculation files, reconciliations and review evidence supporting freshwater ≤1 000 mg/l tds.
Other water >1 000 mg/L TDS is reported accurately and completely.The response omits, misclassifies or overstates other water >1 000 mg/l tds.Approved source records, calculation files, reconciliations and review evidence supporting other water >1 000 mg/l tds.
TDS split for all areas is reported accurately and completely.The response omits, misclassifies or overstates tds split for all areas.Approved source records, calculation files, reconciliations and review evidence supporting tds split for all areas.
TDS split for stressed areas is reported accurately and completely.The response omits, misclassifies or overstates tds split for stressed areas.Approved source records, calculation files, reconciliations and review evidence supporting tds split for stressed areas.
Original source of third-party stressed water is reported accurately and completely.The response omits, misclassifies or overstates original source of third-party stressed water.Approved source records, calculation files, reconciliations and review evidence supporting original source of third-party stressed water.
Publicly available credible water-stress tool is reported accurately and completely.The response omits, misclassifies or overstates publicly available credible water-stress tool.Approved source records, calculation files, reconciliations and review evidence supporting publicly available credible water-stress tool.
Catchment-level assessment is reported accurately and completely.The response omits, misclassifies or overstates catchment-level assessment.Approved source records, calculation files, reconciliations and review evidence supporting catchment-level assessment.
Tool version and date is reported accurately and completely.The response omits, misclassifies or overstates tool version and date.Approved source records, calculation files, reconciliations and review evidence supporting tool version and date.
Stress threshold is reported accurately and completely.The response omits, misclassifies or overstates stress threshold.Approved source records, calculation files, reconciliations and review evidence supporting stress threshold.
Measurement methodologies is reported accurately and completely.The response omits, misclassifies or overstates measurement methodologies.Approved source records, calculation files, reconciliations and review evidence supporting measurement methodologies.
Assumptions is reported accurately and completely.The response omits, misclassifies or overstates assumptions.Approved source records, calculation files, reconciliations and review evidence supporting assumptions.
Estimates clearly identified is reported accurately and completely.The response omits, misclassifies or overstates estimates clearly identified.Approved source records, calculation files, reconciliations and review evidence supporting estimates clearly identified.
Meter and invoice reconciliation is reported accurately and completely.The response omits, misclassifies or overstates meter and invoice reconciliation.Approved source records, calculation files, reconciliations and review evidence supporting meter and invoice reconciliation.
All-area/source reconciliation is reported accurately and completely.The response omits, misclassifies or overstates all-area/source reconciliation.Approved source records, calculation files, reconciliations and review evidence supporting all-area/source reconciliation.
Stressed-area subset reconciliation is reported accurately and completely.The response omits, misclassifies or overstates stressed-area subset reconciliation.Approved source records, calculation files, reconciliations and review evidence supporting stressed-area subset reconciliation.
Third-party source reconciliation is reported accurately and completely.The response omits, misclassifies or overstates third-party source reconciliation.Approved source records, calculation files, reconciliations and review evidence supporting third-party source reconciliation.
Facility-level stressed-area data is reported accurately and completely.The response omits, misclassifies or overstates facility-level stressed-area data.Approved source records, calculation files, reconciliations and review evidence supporting facility-level stressed-area data.
Supplier withdrawal in stressed areas is reported accurately and completely.The response omits, misclassifies or overstates supplier withdrawal in stressed areas.Approved source records, calculation files, reconciliations and review evidence supporting supplier withdrawal in stressed areas.
Acquisitions and disposals methodology is reported accurately and completely.The response omits, misclassifies or overstates acquisitions and disposals methodology.Approved source records, calculation files, reconciliations and review evidence supporting acquisitions and disposals methodology.
Link to GRI 3-3 is reported accurately and completely.The response omits, misclassifies or overstates link to gri 3-3.Approved source records, calculation files, reconciliations and review evidence supporting link to gri 3-3.
Link to GRI 303-1, 303-4 and 303-5 is reported accurately and completely.The response omits, misclassifies or overstates link to gri 303-1, 303-4 and 303-5.Approved source records, calculation files, reconciliations and review evidence supporting link to gri 303-1, 303-4 and 303-5.
Reason for omission is reported accurately and completely.The response omits, misclassifies or overstates reason for omission.Approved source records, calculation files, reconciliations and review evidence supporting reason for omission.

Evidence pack to prepare

Common reporting gaps

Using water intake, total water or recycled water as a substitute for water withdrawal.
Omitting the freshwater and other-water split by source.
Using internal labels in place of the defined GRI terms.
Leaving a required preparation field unsupported by traceable evidence.
Treating GRI recommendations as mandatory requirements or mandatory requirements as optional.
Publishing estimates, exclusions or partial scope without methods, assumptions and the applicable reason for omission.
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Dr Ross Kurinko

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Framework references

Relevant GRI requirements and related disclosures

Available framework references and nearby disclosures relevant to preparing this requirement.

GRI

GRI 303-3

within GRI 303: Water and Effluents

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