Water

Corporate water stewardship and hotels

AWS (Alliance for Water Stewardship) and the CDP Water programme. How travel-intensive companies factor water-stress into hotel selection.

Why this matters now

AWS (Alliance for Water Stewardship) and the CDP Water programme. How travel-intensive companies factor water-stress into hotel selection.

For corporate ESG teams the practical question is not whether corporate water stewardship and hotels matters — it does — but where it sits in the disclosure stack, who audits it, and what evidence survives external assurance. The framing on this page is buyer-side: how the topic shows up in CSRD, SBTi, CDP and ESG ratings, and what data a hotel-booking programme needs to surface.

Where it lands in the framework

Most corporate ESG reporting frameworks (CSRD ESRS, IFRS S2, CDP Climate Change, SBTi) require the same underlying inventory: gross Scope 1, 2 and 3 emissions calculated under the GHG Protocol. Business-travel exposure typically sits in Scope 3 Category 6. Voluntary credits, removals and other Beyond Value Chain Mitigation appear in separate disclosure lines, never netted against gross emissions.

The trap most ESG programmes fall into is conflating the Scope 3 figure (which must be reduced over time to meet science-based targets) with the offset spend (which is BVCM and contributes nothing to the reduction target). Keep them on separate lines, evidenced separately.

The audit-trail bar

External assurance — limited under CSRD year 1, reasonable from 2028 — checks three things: methodology (consistent, GHG Protocol-aligned), evidence (source-system extracts, not summarised reports), and completeness (the booking ledger reconciles to the expense ledger). For Beyond Value Chain Mitigation, the audit bar is registry-level evidence: the retirement number, the registry, the retirement date, and (increasingly) the on-chain provenance.

Most corporate offset programmes still rely on PDF retirement certificates. The next iteration — already in production at IMPT and a small number of other platforms — is a public-blockchain retirement record that gives non-repudiable provenance: the registry, the buyer wallet, the credit serial, and the block timestamp all agree.

How IMPT fits the corporate workflow

Water stewardship is now an ESG-reporting line in its own right. Hotels in high-baseline water-stress regions (parts of Spain, the US Southwest, South Africa) face increasing scrutiny. Corporate buyers can include water-intensity per occupied room in supplier RFPs.

IMPT's per-booking voluntary retirement is structured as Beyond Value Chain Mitigation. It is not netted against Scope 3 gross emissions. The retirement record is anchored on Ethereum mainnet with a transaction hash tied to the booking ID — that record is the audit evidence.

For the corporate workflow: book hotels through IMPT; export the booking CSV monthly; ingest into your sustainability platform (Persefoni, Watershed, Sphera, Salesforce Net Zero Cloud); apply your chosen emission-factor methodology; report Scope 3 Cat 6 gross emissions in your CSRD ESRS E1, CDP C6, or equivalent disclosure; report the IMPT retirements separately in the BVCM disclosure line.

Common mistakes

Three recurring errors in corporate disclosure on this topic:

1. Netting voluntary credits against Scope 3. The GHG Protocol does not permit this. SBTi, ESRS, IFRS S2 do not permit this. Voluntary credits sit in a separate BVCM line.
2. Spend-based methodology for material exposure. Spend-based is the lowest-accuracy method and is flagged by auditors when used for material categories.
3. Carbon-neutral claims without method disclosure. The EU Green Claims Directive, UK CMA Green Claims Code, French Loi Climat and US FTC Green Guides all converge on the same requirement: disclose the methodology, the source of the offsets, the registry, and the retirement evidence at the point of the claim.

Frequently asked