ESRS E3 Water and Marine Resources Disclosures
Overview
Draft and validate ESRS E3 topical disclosures for a CSRD sustainability statement: topic-specific SBM-3 and E3-IRO-1 water/marine IRO assessment, E3-1 policies, E3-2 actions and resources, E3-3 targets, E3-4 water consumption with withdrawal, discharge, recycling/reuse and high-water-stress-area metrics, and E3-5 anticipated financial effects from water- and marine-resources-related impacts, risks, and opportunities.
The skill uses WRI Aqueduct, CDP Water, the Water Framework Directive, and the Marine Strategy Framework Directive context; consumes DMA materiality decisions; and hands disclosure rows back to ESRS 2 IRO-2. It is designed for water-intensive sectors, high-water-stress geographies, and marine/coastal business models where site-level evidence, permits, basin context, and assurance traceability matter.
What It Covers
- SBM-3 and E3-IRO-1 — material water and marine IROs, strategy interaction, site/basin screening, water-stress classification, value-chain dependencies, affected water bodies, and marine exposure.
- E3-1 / E3-2 / E3-3 — policies, actions, resources, and MDR-T-compliant targets for water stewardship, water efficiency, discharge management, reuse/recycling, supplier water risk, and marine-resource protection.
- E3-4 water metrics — withdrawal by source, discharge by destination, consumption, recycled/reused water, high-water-stress-area metrics, water storage changes, intensity denominators, methodology, and evidence references.
- E3-5 financial effects — anticipated financial effects from water scarcity, drought, flood, permit restrictions, allocation limits, treatment costs, marine-resource restrictions, protected marine areas, and water/marine opportunities.
- Boundary management — keeps water-as-a-resource in E3, pollutant loads in E2, biodiversity/ecosystem detail in E4, circular-resource management in E5, and affected-community impacts in S3.
Example Conversation
You: We need the ESRS E3 section for our FY2025 CSRD report. We make beverages in Spain, France, and Poland. Two bottling plants are in high-water-stress basins per WRI Aqueduct, and our DMA says water withdrawal and consumption are material. Draft the full E3 pack from our program folder.
Agent: I’ll first confirm E3 materiality in
program/material-topics.md, reconcile the E3 IROs inprogram/iro-register.csv, and read the site water balance, WRI Aqueduct memo, permits, stakeholder log, and evidence index. I won’t rescore the DMA; I’ll use it as the gate for E3 scope.
Agent: I found three material IROs: high-water-stress groundwater dependency in Spain, discharge permit tightening in France, and supplier irrigation dependency upstream. I’ll draft SBM-3, E3-IRO-1, E3-1 through E3-5, and create pending evidence markers for the missing Poland meter calibration report.
You: Make sure the E3-4 table shows withdrawal, discharge, consumption, and reuse separately. Our auditors always ask how consumption reconciles.
Agent: Done. The E3-4 section now reconciles withdrawal minus discharge adjusted for storage and water incorporated into product. It separates groundwater, surface water, third-party water, and rainwater; flags high-water-stress consumption; and shows recycled/reused water as a separate performance metric.
Agent: Running
validate_esrs_e3_water_marineonoutput/esrs-e3-water-marine.md… Result: PASS. Remaining assumptions: Poland meter calibration evidence pending, Spain basin classification methodology owner confirmation pending.
Sample Output Excerpt
E3-4 water metrics section produced by the skill, with source/destination detail, high-water-stress treatment, and an assurance-ready methodology note.
# E3-4 Water consumption
Materiality scope: water withdrawal and water consumption are material per
DMA decision E3-WAT-01 and E3-WAT-02. Marine resources are not material for
own operations; upstream packaging supplier coastal exposure remains under
monitoring and is cross-referenced in E3-IRO-1.
## Water balance by site (m³)
| Site | Basin / water stress | Withdrawal | Discharge | Storage change | Consumption | Recycled / reused |
| ----------------- | -------------------- | ------------: | ------------: | -------------: | ----------: | ----------------: |
| Valencia bottling | Júcar basin / high | 1,240,000 | 820,000 | +8,000 | 412,000 | 310,000 |
| Lyon blending | Rhône basin / medium | 680,000 | 590,000 | -2,000 | 92,000 | 74,000 |
| Poznań packaging | Warta basin / low | 210,000 | 188,000 | 0 | 22,000 | 11,000 |
| **Total** | — | **2,130,000** | **1,598,000** | **+6,000** | **526,000** | **395,000** |
Consumption methodology: consumption equals water withdrawn minus water
discharged, adjusted for material storage changes and water incorporated
into product, evaporated, transpired, or otherwise not returned to the same
catchment in the reporting period. The Valencia plant is classified as
high water stress using WRI Aqueduct 4.0 baseline water stress scoring
(EVID-WAT-004). Meter coverage is 96%; the remaining 4% is estimated from
utility invoices and production allocation factors.
## Withdrawal by source
| Source | m³ | Evidence |
| --------------------------- | --------: | ------------------------------- |
| Groundwater | 1,080,000 | EVID-WAT-VAL-ABSTRACTION-PERMIT |
| Surface water | 420,000 | EVID-WAT-LYO-RIVER-INTAKE |
| Third-party municipal water | 590,000 | EVID-WAT-UTILITY-INVOICES |
| Rainwater harvested | 40,000 | EVID-WAT-RAINWATER-METERS |
## Discharge by destination
| Destination | m³ | Compliance context |
| --------------------- | ------: | ----------------------------------------------------------------------- |
| Surface water | 910,000 | Within permit limits; pollutant-load detail cross-referenced to ESRS E2 |
| Third-party treatment | 688,000 | Municipal treatment certificates on file |
Assurance notes: Poland meter calibration report remains [PENDING: EHS
owner/source]. Discharge-quality pollutant loads are not duplicated here;
see ESRS E2 pollution disclosure for E-PRTR / IEP pollutant register.
Extension Tools
validate_esrs_e3_water_marine validates an ESRS E3 water and marine resources pack, water metrics file, targets tracker, policy register, actions section, or financial-effects section.
It checks for:
- ESRS E3 / Delegated Regulation (EU) 2023/2772 anchor references.
- DMA-referenced materiality and non-materiality handling.
- SBM-3 and E3-IRO-1 coverage for strategy interaction, IRO traceability, site/basin screening, water-stress classification, and marine-resource assessment.
- E3-1 policy fields: scope, accountability, value-chain coverage, public availability, and water/marine instrument references.
- E3-2 action fields: resources, expected outcomes, withdrawal/consumption/discharge/reuse impacts, and target links.
- E3-3 target fields: baseline, base year, target year, milestones, methodology, owner, and progress.
- E3-4 water metrics: withdrawal, discharge, consumption, high-water-stress metrics, recycled/reused water, methodology, and evidence references.
- E3-5 financial effects: short/medium/long horizons and water/marine financial drivers.
- Sibling-topic boundaries for E2 pollution and E4 biodiversity/ecosystems.
The validator refuses absolute paths, parent traversal, and symlink escapes, then returns a pass/fail checklist with remediation guidance for missing disclosure elements.
Getting Started
Install the CSRD / ESRS Sustainability Reporting Program workspace template so the shared program/ assets are available. Populate the entity profile, value-chain map, material topics, IRO register, datapoint index, evidence index, water balance workbooks, water-stress classification memo, permits, stakeholder engagement records, and any marine/coastal exposure records.
Then ask the agent to draft either the full E3 pack or a scoped sub-deliverable such as E3-4 water metrics, E3-5 financial effects, a policy register, or a non-materiality statement. Run validate_esrs_e3_water_marine before handing the pack to assurance, and cross-reference E2 for pollutant loads, E4 for biodiversity/ecosystem detail, E5 for circular-economy matters, and S3 for affected-community impacts.