Watershed carbon accounting software

Watershed calls itself the enterprise platform for emissions measurement and sustainability disclosure.

Its platform page describes three modules: Measure, for building the emissions inventory; Report, for turning data into disclosures; and Act, for targets, supplier programmes and clean-power and carbon-removal purchasing.

On measurement it says it ingests PDFs automatically, uses AI agents to clean and analyse data, and holds 2.3 million built-in emission factors covering 95% of global GDP.

It says its methodologies are third-party assured every year, and that calculations are transparent with full lineage.

On reporting it describes ingesting data once and reusing it across reports, with peer benchmarks, AI-drafted text and an audit trail.

Its CSRD page adds double materiality mapped to the ESRS, automatic ESRS metrics with “150+ automated checks”, in-product guidance and benchmarks drawn from 10,000 companies.

All of these are Watershed’s statements about its own product.

Watershed says all scopes are covered and that it has purpose-built methodologies for all 15 Scope 3 categories.

It also describes activity-based Scope 3 category 1 — purchased goods and services — to inform procurement decisions.

The UK tests are specific.

UK SRS S2 ¶29(a) asks for absolute gross Scope 1, 2 and 3 emissions measured under the GHG Protocol Corporate Standard, and location-based Scope 2, with market-based information permitted but not required.

¶¶B32–B33 require all fifteen Scope 3 categories to be considered and the included ones disclosed — which is a record, not a total.

For UK activity data, the DESNZ conversion factors for the year in which the activity mostly fell are the set a SECR report would expect; ask which set Watershed applies to UK electricity, and how the 2026 methodology change is annotated.

Watershed’s “Act” module includes investing in carbon removal; under UK SRS S2 credits never reduce the gross inventory, so ask to see them held in a separate ledger.

The rule is explained on Scope 3 under UK SRS.

Watershed says its methodologies are third-party assured every year, that every reported figure traces back to its source data, calculation and approver, and that it offers verification support and what it calls a guaranteed assurance program.

Those are Watershed’s statements, and the assurance it refers to is over its own methodologies, not over any customer’s report.

In the UK, no company is required to obtain sustainability assurance; listed companies in scope of the FCA rules must state whether they did, from whom and to which standard (PS26/19).

Two third-party marks can be checked at their owners’ own pages: CDP’s partner register lists Watershed as an Accredited Solutions Provider of the Software type, with no tier shown; and Verdantix’s 2026 Green Quadrant press release names Watershed among eight firms in its leading group.

Both are those organisations’ views, made by their own methods, and neither is ours; Watershed’s reports to CDP’s disclosure system are a separate matter again.

The builder beside this text lists one demonstration request per requirement for the regimes you choose, each with the provision behind it.

Take it into a Watershed demonstration and mark what was shown on your own data and what was only described.

For a UK group that also reports under the ESRS, add the CSRD requests: the version statement and both Scope 2 methods are where UK and EU requirements part.

The full register, and the reasoning behind each request, is on sustainability software.