DitchCarbon vs Watershed: Choosing Your Scope 3 Platform

DitchCarbon vs Watershed: A Head-to-Head Comparison

Choosing the right platform to manage your Scope 3 emissions is a critical decision. It’s the difference between simply reporting a number and actively driving decarbonisation through your supply chain. Two of the most prominent names in the space are DitchCarbon and Watershed. While both help organisations get a handle on their value chain emissions, they approach the problem with different philosophies and core strengths.

Watershed offers a broad, all-in-one climate platform designed to be a single source of truth for all emissions-Scopes 1, 2, and 3-alongside other sustainability metrics. It excels at comprehensive corporate footprinting and reporting.

DitchCarbon takes a more focused approach, building its platform specifically to tackle the most complex and impactful area of Scope 3: supply chain emissions, particularly Purchased Goods and Services. It’s designed not just for measurement, but for embedding emissions intelligence directly into procurement decisions to accelerate reduction.

This comparison breaks down their differences across key areas to help you decide which platform is the right fit for your organisation’s goals.

At a Glance: DitchCarbon vs Watershed

FeatureDitchCarbonWatershedCore FocusDeep specialism in Scope 3 supply chain decarbonisation (Category 1 & 2), with a focus on procurement enablement.All-in-one climate platform for Scopes 1, 2, and 3, plus water, waste, and broader sustainability reporting.Ideal UserSustainability and procurement teams tasked with operationalising supplier decarbonisation and making lower-carbon buying decisions.Organisations seeking a single, comprehensive platform to manage and report their entire carbon footprint for compliance and stakeholders.Data StrategyPrioritises verified, primary supplier data, augmented by public disclosures and high-quality estimates. Strong emphasis on data provenance and auditability.Blends spend-based analysis for a quick baseline with activity data and supplier information to refine the total footprint.Supplier EngagementScalable engagement tools designed to maximise response rates and minimise supplier fatigue, using existing disclosures where possible.Provides a supplier engagement module within its broader platform to collect data and encourage reductions.Key DifferentiatorEmbedding an emissions signal into procurement workflows to influence buying decisions before the purchase order is raised.A single pane of glass for all corporate climate data, from energy consumption to supply chain emissions.

Data Accuracy and Methodology

The credibility of any Scope 3 programme rests on the quality of its data. How each platform sources, verifies, and manages this data is a fundamental point of difference.

DitchCarbon: A Focus on Verifiable, Auditable Data

DitchCarbon is built on the principle that moving from spend-based estimates to supplier-specific data is the only path to genuine reduction. Its methodology prioritises a clear data quality hierarchy:

• Primary Supplier Data: Direct, verified emissions data collected from suppliers is treated as the gold standard. The platform includes tools to streamline this collection at scale.
• Verified Public Data: DitchCarbon leverages a vast, mapped universe of existing public disclosures (like CDP and sustainability reports), normalising this data to fill gaps without repeatedly asking suppliers for information they’ve already shared.
• High-Quality Estimates: When primary data isn’t available, the platform uses granular, context-aware estimates, but always with full transparency on the source and methodology.

Crucially, DitchCarbon places immense emphasis on provenance and auditability. Every data point is version-controlled and traceable to its source, creating an audit-ready evidence pack that gives sustainability and finance teams confidence in the numbers they report.

Watershed: Comprehensive Footprinting Across All Scopes

Watershed’s methodology is designed for comprehensive footprinting. It aims to give companies a complete view of their emissions across all scopes and categories quickly. The process typically starts with a spend-based analysis, using financial data from ERP systems to create an initial, top-down view of the entire carbon footprint.

From there, the platform works to refine this baseline by layering in more specific information:

• Activity Data: For Scopes 1 and 2, it integrates with utility providers, cloud services, and logistics systems to pull in activity-based data (e.g., kWh of electricity, litres of fuel).
• Supplier Data: Through its “Watershed Supply Chain” module, it helps companies engage suppliers to replace spend-based estimates with more accurate figures.

The strength of Watershed's approach is its breadth. It provides a holistic view that’s valuable for corporate-level reporting and identifying high-level hotspots across the entire business. The initial focus is on getting a complete picture, which is then progressively improved over time.

Scope 3 Coverage and Supplier Engagement

While both platforms engage suppliers, their tools and philosophies are tailored to their core focus.

DitchCarbon: Deep Engagement for Supply Chain Action

DitchCarbon is laser-focused on the largest and most challenging Scope 3 categories, especially Category 1 (Purchased Goods & Services). Its supplier engagement toolkit is engineered to solve the classic problems of low response rates and supplier fatigue.

Key features include:

• Scalable Collection: Automates data requests, reminders, and quality assurance for thousands of suppliers simultaneously.
• Smart Outreach: Minimises new requests by first checking for existing, high-quality public data, respecting suppliers' time.
• Supplier Empowerment: Provides suppliers with context, benchmarks, and scorecards, showing them where they stand and how to improve, turning a data request into a collaborative exercise.

The goal is not just to collect data for a report, but to build a system of engagement that supports ongoing collaboration and measurable reductions year after year.

Watershed: Broad Coverage for Complete Reporting

Watershed is designed to cover all 15 Scope 3 categories, from purchased goods to business travel and employee commuting. Its platform allows companies to allocate spend data across these categories and then work to gather more specific data where it matters most.

The supplier engagement functionality within Watershed allows companies to invite suppliers to the platform, request emissions data, and track their progress. It provides suppliers with tools to calculate their own footprint, helping to build capability within the value chain. This broad approach ensures that no category is left unmeasured, which is essential for comprehensive disclosures and framework reporting like CSRD.

Integrations and Procurement Workflow

How a platform fits into your existing technology stack and business processes can determine its ultimate impact.

DitchCarbon: Enabling Sustainable Procurement

DitchCarbon’s integration strategy is uniquely focused on what it calls “decisions before the PO.” The platform is designed to move emissions data out of the annual sustainability report and into the hands of buyers making daily sourcing decisions. It integrates with procurement and ERP systems to provide a clear emissions signal at the point of decision.

This allows procurement teams to:

• Compare the emissions intensity of different suppliers for the same goods or services.
• Factor carbon into sourcing and tender processes.
• Track the real-world emissions impact of their buying choices.

This transforms the sustainability team from a reporting function into a strategic partner that empowers procurement to become a powerful engine for decarbonisation.

Watershed: Automating Data Ingestion

Watershed’s integrations are built to automate data collection from a wide array of corporate systems. This includes deep connections with ERPs, cloud infrastructure providers (like AWS and Azure), travel management software, and HR systems. The primary goal of these integrations is to reduce the manual effort of gathering the activity data needed for a complete and accurate footprint across Scopes 1, 2, and 3. This automation makes the annual reporting cycle faster and more reliable.

The Verdict: When to Choose Which Platform

Both DitchCarbon and Watershed are powerful platforms, but they are optimised for different jobs-to-be-done. The right choice depends entirely on your organisation’s primary challenge and strategic priority.

Choose DitchCarbon if:

• Your most significant climate challenge and opportunity lies within your supply chain (Scope 3, Category 1).
• Your goal is to move beyond reporting and actively operationalise decarbonisation through procurement.
• You need a highly credible, audit-proof system for tracking supplier-specific data and its provenance.
• You want to empower your procurement team with the data they need to make lower-carbon buying decisions.

Choose Watershed if:

• You need a single, all-in-one platform to manage your entire corporate carbon footprint across Scopes 1, 2, and 3.
• Your immediate priority is comprehensive, audit-ready reporting for multiple frameworks and stakeholders.
• You are at the beginning of your climate journey and need a tool to quickly map your total footprint and identify hotspots across all business functions.
• You have a broad sustainability programme that includes water, waste, and other metrics in addition to carbon.