The Distance Between Sustainability Claims & the Controls That Support Them

Key Takeaways

• Greenwashing Is a Control Failure: Regulators are reframing misleading sustainability claims as breakdowns in governance, controls, and accountability, not just reputational risks.
• Evidence Is Replacing Narrative: Organizations must now substantiate sustainability disclosures with traceable data, documented methodologies, and auditable processes.
• Data Governance Is Foundational: Weak data lineage, inconsistent definitions, and fragmented systems are emerging as primary drivers of sustainability risk.
• Third-Party Risk Is Expanding: Supply chain data and external dependencies are increasing exposure, requiring stronger oversight within TPRM programs.
• GRC Functions Are Moving to the Center: Compliance, risk, and internal audit teams are becoming critical in validating sustainability claims and ensuring they can withstand regulatory scrutiny.

Deep Dive

There was a time, not long ago, when sustainability lived comfortably in the realm of language. It was shaped in marketing decks and annual reports, polished into pledges and promises that felt, if not always precise, then at least directionally virtuous. Companies spoke of pathways and commitments, of journeys toward net zero and stewardship, and for a while that was enough. The words carried weight simply because they were spoken.

That time is passing.

What is emerging in its place is something less forgiving. Regulators are no longer listening for intent; they are examining evidence. Investors are not asking what organizations say they will become, but how, exactly, those claims are constructed, governed, and verified. And in that shift, greenwashing has begun to shed its old identity as a reputational misstep or a marketing excess. It is being recast, more starkly, as a failure of control.

This is not merely a change in tone. It is a change in category.

For compliance and risk professionals, that distinction matters. A reputational issue can be managed with messaging, with corrections, with time. A control failure, by contrast, demands structure. It demands accountability. It demands that someone, somewhere in the organization, can point to a system and say with confidence that the claim in question is supported, traceable, and true.

And in many organizations, that system does not yet exist.

The Fragility Beneath the Claim

Consider the anatomy of a typical sustainability disclosure. A company reports reduced emissions, improved sourcing practices, or progress toward a climate target. On the surface, the claim appears straightforward. Beneath it, however, lies a web of data sources, assumptions, and dependencies that are anything but simple.

Emissions data may be drawn from internal systems that were never designed for external reporting. Scope 3 estimates may rely on supplier-provided information that is inconsistent, incomplete, or unverifiable. Methodologies may shift from year to year, not out of malice, but out of necessity, as standards evolve faster than systems can keep pace.

In this environment, the risk is not always deliberate misrepresentation. More often, it is drift. A gradual separation between what is said and what can be substantiated. A claim that begins as an honest reflection of imperfect data, but over time becomes untethered from the controls needed to support it.

This is where greenwashing takes root, not always in deception, but in the absence of discipline.

From Narrative to Evidence

Regulators have begun to close that gap. Across jurisdictions, enforcement actions and guidance are converging on a simple expectation. If a company makes a sustainability claim, it must be able to demonstrate how that claim was derived, what data supports it, and what controls ensure its accuracy over time.

This is, in many ways, a familiar demand. It echoes the logic of financial reporting, where assertions are tied to controls, and controls to evidence. But sustainability reporting has not historically been built on that foundation. It has grown quickly, unevenly, often ahead of the governance structures needed to sustain it.

The result is a kind of asymmetry. Organizations are being held to standards of assurance that their systems were not designed to meet.

For GRC professionals, this is the moment where sustainability ceases to be adjacent to their work and becomes central to it. The question is no longer how to support ESG reporting, but how to subject it to the same rigor as any other regulated disclosure.

The Hidden Role of Data Governance

At the heart of this transition lies data. Not the idea of data, but its lived reality inside organizations. Where it originates, how it moves, who owns it, and whether it can be trusted. Sustainability data, unlike financial data, often spans multiple systems, functions, and external parties. It is collected in fragments, reconciled in spreadsheets, and reported through processes that are as much manual as they are automated.

In such an environment, control is elusive.

Data governance, long treated as a technical or operational concern, becomes something more consequential. It becomes the foundation upon which sustainability claims either stand or collapse. Without clear ownership, consistent definitions, and traceable lineage, even well-intentioned disclosures can falter under scrutiny.

This is not an abstract risk. It is a practical one. When regulators ask how a figure was calculated, or how a claim was validated, the answer must be more than a narrative. It must be a pathway that is clear, documented, and repeatable.

Third Parties and the Expanding Perimeter

The challenge deepens as the boundary of responsibility extends beyond the organization itself. Much of what companies now disclose, particularly in areas like supply chain sustainability, depends on third-party data. Suppliers, partners, and service providers become integral to the integrity of the claim.

Yet these relationships are often governed by commercial considerations, not by the standards of assurance required for regulated disclosures. This creates a tension that is still being resolved.

Third-party risk management programs, historically focused on financial stability or cybersecurity, are being asked to absorb a new dimension. They must assess not only whether a supplier is reliable, but whether the data it provides can withstand scrutiny. Whether its processes align with the expectations placed on the reporting organization. Whether, in effect, it can be trusted as part of a control environment that extends beyond direct oversight.

For many organizations, this represents a significant shift. It requires rethinking how third parties are onboarded, monitored, and, when necessary, challenged.

A Different Kind of Accountability

What ultimately emerges from all of this is a different understanding of accountability. Sustainability can no longer be owned solely by a function, whether that be communications, strategy, or even a dedicated ESG team. It becomes a shared responsibility, woven into the fabric of governance, risk, and compliance. The claims an organization makes are no longer just statements of intent; they are assertions that must be defended.

And defense, in this context, does not mean justification. It means evidence.

This is where internal audit begins to play a more prominent role. Where controls are tested, not assumed. Where processes are examined, not described. Where the quiet work of verification replaces the louder language of ambition.

It is, in many ways, a return to fundamentals. To the idea that what is reported must be rooted in what can be proven.

The End of Plausible Ambiguity

There is a certain clarity that comes with this shift, even if it is uncomfortable. For years, sustainability disclosures have operated in a space that allowed for a degree of ambiguity. Not because organizations sought to mislead, but because the systems and standards were still evolving. That ambiguity is narrowing. Expectations are hardening. The space between what can be claimed and what must be demonstrated is closing.

In that narrowing, the nature of greenwashing changes.

It is no longer simply about exaggerated language or selective disclosure. It is about whether the organization has built the controls necessary to support what it says. Whether its data can be traced, its processes audited, its claims verified. Whether, in the end, it has treated sustainability not as a story to be told, but as a system to be governed.

For those in GRC, this is not an external development to observe. It is an internal mandate to act. Because the question is no longer whether organizations will be judged on their sustainability claims. That judgment has already begun.

The question now is whether those claims can withstand it.

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